pictures

Torpedo-Schnelladdiermaschine (1933)

"Nine digit adding maschine from the Torpedo-Werke A.G., Frankfurt a. Main. The machine works without an actuator, i.e. pressing the number keys directly reflects in the result. Subtraction is done by using the complement numbers."

	principle	rocker arm
	capacity	9 x x 9
	input	half keyboard
	prod. years	from 1933
	mach. built
	features	1-species
	dimensions	23 x 15 x 11 cm
	weight	2.5 kg
	known s/n	5.990, 7.282, 16.175

		for bigger and more pictures, click on the picture

source: XSibirian_HuskyX

Friden (1934)

Manufacturer: Friden Calculating Machine Company, San Leandro, USA

designer: Carl Friden (1891 - 1945)

From Wikipedia

Carl Friden (April 11, 1891-April 29, 1945) was a Swedish born American mechanical engineer and businessman who founded the Friden Calculating Machine Company (Friden, Inc.) in San Leandro, California in 1934. Prior to founding his own company, Friden had been a chief designer for the Marchant Calculating Machine Co. of Oakland His machines were robust and quickly became popular.

Friden's company introduced a calculator that included a square root function in 1952, then went on in 1963 to introduce the model EC-130, the fully transistorized electronic calculator. In 1965 the company was purchased by the Singer Corporation.

Literature and links:

Martin Reese "Neue Blicke auf alte Maschinen" (page 39 ff.) (IFHB)

Friden D

principle	stepped drum
capacity	10 (w/o cr) x 11 (w tc) x 21 also 8 (w/o cr) x 9 (w tc) x 16
input	full keyboard
prod. years	1940 - 1949
mach. built
features	electric, semi-automat, full automatic division
dimensions	46 x 37 x 23 cm
weight
known s/n	206,001 - 225,450

	for bigger and more pictures, click on the picture
		source: A.Devaux

Friden H

principle	twin divided stepped drum
capacity	8 (w/o cr) x 9 (w tc) x 16
input	full keyboard
prod. years	1936 - 1952
mach. built
features
dimensions	42 x 36 x 22 cm
weight	13 kg
known s/n	51.909

	for bigger and more pictures, click on the picture
		source: E.Anthes

Friden S

principle	twin stepped drum
capacity	8 (w/o cr) x 9 (w tc) x 17 also 10 (w/o cr) x 11 (w t/c) x 21
input	full keyboard
prod. years	ca. 1940
mach. built
features	electric, full-automat, sep. input of mult. factor
dimensions
weight
known s/n	104,952

	for bigger and more pictures, click on the picture
		source: R.Chirico

Friden SBT

principle	stepped drum
capacity	10 (w/o cr) x 11 (w tc) x 20
input	full keyboard
prod. years	ca. 1959 - 1965
mach. built
features	electric, full-automat, back transfer
dimensions	46 x 37 x 23 cm
weight	19 kg
known s/n	933,611.J.J

	for bigger and more pictures, click on the picture
		source: A.Devaux

Friden SRW

using a modified Toepler method for calculation of the square root

Reese, Lange, Anthes: Der Friden Wurzelautomat, in: Beiträge zur Geschichte der mech. Rechenmaschinen. Grüne Reihe der Päd.Hochschule Ludwigsburg (1998)

principle	stepped drum
capacity	10 (w/o cr) x 11 (w tc) x 20
input	full keyboard
prod. years	1952 - 1966
mach. built	9,500
features	electric, full-automatic square root
dimensions	46 x 37 x 23 cm
weight	19 kg
known s/n	875,001 - 884,490 10,878,705A, 10,811,827JJ

	for bigger and more pictures, click on the picture
		source: A.Devaux

Friden ST

principle	stepped drum
capacity	10 (w/o cr) x 11 (w tc) x 20
input	full keyboard
prod. years	1940 - 1950
mach. built
features	electric
dimensions
weight
known s/n	107,776 - 208,148

	for bigger and more pictures, click on the picture
		source: A.Devaux

Friden STW

principle	stepped drum
capacity	10 (w/o cr) x 11 (w tc) x 20
input	full keyboard
prod. years	ca. 1949 - 1966
mach. built
features	electric, full-automat
dimensions	46 x 37 x 23 cm
weight	18 kg
known s/n	462,275, 642,417

	for bigger and more pictures, click on the picture
		source: A.Devaux

Alfa - Aldo-Bona (1935)

Martin (US), page -

Martin (Dtsch), pages 388 - 389

Manufacturer: Aldo-Bona, Milano, Italy

Construction: Giuseppe Inzadi

Alfa Junior

	principle	tooth rack
	capacity	10 (w/o cr) x x 10
	input	full keyboard
	prod. years	ca. 1948
	mach. built
	features	1 species
	dimensions
	weight	7 kg
	known s/n	2,828

		for bigger and more pictures, click on the picture

source: FM.Faes

Sojuz-Org-Ucet (1935)

Manufacturer: N.K.T.P. Peoples Comm. Heavy Production, UdSSR

principle	pin wheel
capacity	9 (w/o cr) x 8 (w/o tc) x 13
input	cursors, rotating
prod. years	ca. 1935
mach. built
features
dimensions	32 x 12 x 14 cm
weight	5 kg
known s/n	4.337

	for bigger and more pictures, click on the picture
		source: HJ.Denker

also marketed under the name Standard No 5

Standard No 5

principle	pin wheel
capacity	9 (w/o cr) x 8 (w/o tc) x 13
input	cursors, rotating
prod. years	ca. 1935
mach. built
features
dimensions	28 x 14 x 12 cm
weight	4 kg
known s/n	11.090

	for bigger and more pictures, click on the picture
		source: W.Szrek

Vaucanson (1936)

Manufacturer: Ateliers Vaucanson, Paris, France

Model A

principle	pin wheel
capacity	7 (w/o cr) x 5 (w/o tc) x 10
input	cursors, rotating
prod. years	around 1929
mach. built
features
dimensions	32 x 16 x 11 cm
weight	5 kg
known s/n	407

	for bigger and more pictures, click on the picture
		source: H.Kremer

Model A.V.A. 13 , A.V.A. 13T

principle	pin wheel
capacity	10 (w cr) x 8 (w tc) x 13
input	cursors, rotating
prod. years	around 1936
mach. built
features
dimensions	36 x 19 x 15 cm
weight	7.9 kg
known s/n	14,625, 25,392, 32,272, 32,901

	for bigger and more pictures, click on the picture
		source: HJ.Denker

Model A.V.A. 20

	principle	pin wheel
	capacity	10 (w cr) x 11 (w tc) x 20
	input	cursors, rotating
	prod. years
	mach. built
	features
	dimensions	42 x 19 x 15 cm
	weight	10 kg
	known s/n	20,455, 40,2xx, 41,496

		for bigger and more pictures, click on the picture

source: R.Rehbein

Model A.V.B. 13

	principle	pinwheel
	capacity	10 x 8 x 13
	input	cursors, rotating
	production years	ca. 1936
	machines built	????
	features

	known s/n	30.726, 5.687


		for bigger and more pictures, click on the picture

source: E.Kniesel

Model D

	principle	pinwheel
	capacity	10 x 11 x 20
	input	cursors, rotating
	production years	ca. 1936
	machines built	????
	features

	known s/n	20.104, 20.336


		for bigger and more pictures, click on the picture

source: F.Haeghens

Pascal A.V. 13T

	principle	pinwheel
	capacity	10 x 8 x 13
	input	cursors, rotating
	production years	ca. 1955
	machines built
	features	very similar to A.V.A 13

	known s/n	33.219


		for bigger and more pictures, click on the picture

source: HJ.Denker

Saldorita (1937)

manufacturer: Saldoritaverken, Motala (S)

	principle	ratchet with tenth carry
	capacity	8 x x 9
	input	cursors
	production years	around 1937
	machines built
	features	2 species machine


	known s/n	2.215

		for bigger and more pictures, click on the picture

source: T.Leipälä

Add-O-Matic (1937)

manufacturer: Allied Manufacturing Company of Chicago, Illinois (US)

video about Add-O-Matic on retrocalculators.com

principle	chain adder
capacity	5 x x 5
input	sliders
prod. years	1937 ?
mach. built
features
dimensions
weight
known s/n

	for bigger and more pictures, click on the picture
		source: Thomas A. Russo

Schubert (1938)

Manufacturer: Schubert & Co. KG, Rastatt, Germany

Emil Schubert was forced out of his company Thales in 1936 and founded his new company in 1938.

(91 kB) table of Thales and Schubert machines

Reese, Martin: Emil Schubert: Firmengründer und Konstrukteur der "Thales"- und "Schubert"- Sprossenradmaschinen. see below

Literature and links:

Reese, Martin: Emil Schubert: Firmengründer und Konstrukteur der "Thales"- und "Schubert"- Sprossenradmaschinen.

part 1: Historische Bürowelt Nr. 56, 2000, S. 13-22. (IFHB)

part 2: Historische Bürowelt Nr. 57, 2000, S. 9-16. (IFHB)

part 3: Historische Bürowelt Nr. 58, 2000, S. 10-15. (IFHB)

Martin Reese "Neue Blicke auf alte Maschinen" (page 69 ff.) (IFHB)

Schubert A

	principle	pinwheel
	capacity	6 (w cr) x 6 (w tc) x 10
	input	cursors, rotating
	prod. years	1938 - 1942
	mach. built
	features
	dimensions	28 x 15 x 14 cm
	weight	4.5 kg
	known s/n	around 40 000, 502 540

		for bigger and more pictures, click on the picture

source: H.Kremer

Schubert AR

	principle	pinwheel
	capacity	6 (w cr) x 6 (w tc) x 10
	input	cursors, rotating
	prod. years	1938 - 1942
	mach. built
	features	back transfer
	dimensions	28 x 15 x 14 cm
	weight	4.5 kg
	known s/n	around 40.000

		for bigger and more pictures, click on the picture

source: HJ.Denker

Schubert CRV

	principle	pinwheel
	capacity	6 (w cr) x 6 (w tc) x 11
	input	cursors, rotating
	prod. years	ca. 1955 - 1972
	mach. built
	features	back transfer
	dimensions	32 x 14 x 13 cm
	weight	5 kg
	known s/n	140.924, 650.092

		for bigger and more pictures, click on the picture

source: M.Meissner

Schubert CW

	principle	pinwheel
	capacity	6 (w cr) x 6 (w tc) x 11
	input	cursors, rotating
	prod. years	1956 - 1972
	mach. built
	features
	dimensions	32 x 14 x 13 cm
	weight	5 kg
	known s/n	75 H-037, 75 N-300

		for bigger and more pictures, click on the picture

source: H.Kremer

Schubert DR

	principle	pinwheel
	capacity	10 (w cr) x 8 (w tc) x 13
	input	cursors, rotating
	prod. years	1946 - 1954
	mach. built
	features	back transfer
	dimensions	33 x 14 x 13 cm
	weight	5.1 kg
	known s/n	150.012, 490.778, 514.051

		for bigger and more pictures, click on the picture

source: D.Boelter

Schubert DRV

also marketed as Rokli 7RS and as ADM Teacher for the UK market

	principle	pinwheel
	capacity	10 (w cr) x 8 (w tc) x 13
	input	cursors, rotating
	prod. years	1952 - 1959
	mach. built
	features	back transfer, one-hand oper.
	dimensions	33 x 15 x 14 cm
	weight	5.5 kg
	known s/n	161.982, 166.409, 172.146, 55M-261
	price	598,- DM (1959)
		for bigger and more pictures, click on the picture

source: Greifswald

Schubert E

	principle	pinwheel
	capacity	10 (w cr) x 8 (w tc) x 16
	input	10 keyboard
	prod. years	1963 - 1966
	mach. built	ca. 550
	features	back transfer
	dimensions	33 x 25 x 16 cm
	weight	8 kg
	known s/n	EV 100-130, E 1.001-1.300
		E 300.001 - 300.210
		for bigger and more pictures, click on the picture

source: HJ.Denker

Maruzen (1938)

"Maruzen merged with Taiyo and incorporated Maruzen Calculating Machine Co, Ltd. which was later renamed to Maruzen Jimukikai & Co, Ltd."

from: K.Kadokura

literature and links:

Katsunori Kadokura: The History of Japanese Mechanical Calculating Machines

	principle	pinwheel
	capacity	9 x 10 x 18
	input	cursors, rotating
	production years	from 1938 / 39
	machines built
	features


	known s/n	182.225

		for bigger and more pictures, click on the picture

source: HJ.Denker

Allen (1939)

Manufacturer: R.C.Allen Calc., Michigan (USA)

Model T

Manufacturer: Facit, Atvidaberg (S)

distributor: R.C.Allen Calc., Michigan (USA)

	principle	divided pinwheel
	capacity	9 x 8 x 13
	input	10 keyboard
	production years	1932 - 1939 (incl. Facit)
	machines built
	features	identical to Facit T


	known s/n	15.001 - 25.330

		for bigger and more pictures, click on the picture

source: HJ.Denker

Model 35

	principle	divided pinwheel
	capacity	9 x 8 x 13
	input	10 keyboard
	production years	1939 - 1943
	machines built
	features	electric
		identical to Facit EA
		short multiplication, autom. short division
	known s/n	24.120

		for bigger and more pictures, click on the picture

source: HJ.Denker

Zolnay Endre (1939)

Manufacturer: Zolnay Endre, Losonc, Hungary

literature and links:

D.Bölter

principle	friction coupling
capacity	4 (w cr) x x 8
input	tooth wheel
prod. years	1939
mach. built	2 machines known
features	2 species
dimensions	13 x 10 x 8 cm
weight
known s/n	1 021

	for bigger and more pictures, click on the picture
		source: D.Bölter

Swift (1939)

Manufacturer: Swift Business Mach., New York (USA)

principle	tooth rack
capacity	8 (w cr) x x 9
input	10 keyboard
prod. years	from 1939
mach. built
features	1 species, repeat button
dimensions	15 x 20 x 11 cm
weight
known s/n	917.192

	for bigger and more pictures, click on the picture
		source: HJ.Denker

Antares (1940)

Manufacturer: Pozzi S.P.A., Milano, Italy & Antares S.P.A., Milano, Italy.

principle	pinwheel
capacity	10 x 8 x 13
input	cursors, rotating
prod. years	from 1949
mach. built
features
dimensions
weight
known s/n	around 15.000

	for bigger and more pictures, click on the picture
		source: HJ.Denker

principle	pinwheel
capacity	10 (w/o cr) x 8 (w tc) x 13
input	cursors, rotating
prod. years
mach. built
features
dimensions	32 x 16 x 13 cm
weight	5 kg
known s/n	21.252

	for bigger and more pictures, click on the picture
		source: P.Ruff

P6 / P7

	principle	pinwheel
	capacity	10 x 8 x 13
	input	cursors, rotating
	production years	ca. 1940
	machines built	????
	features

	known s/n	50.726, 55.290


		for bigger and more pictures, click on the picture

source: F.Haeghens

P 30

	principle	pinwheel
	capacity	10 x 11 x 20
	input	cursors, rotating
	production years	ca. 1940
	machines built	????
	features	back transfer

	known s/n	30/5237


		for bigger and more pictures, click on the picture

source: R.Rehbein

Numeria (1940)

manufacturer: SICMU (Società Italiana Commercio Macchine Ufficio)

distributor: Lagomarsino S.p.A., Milano, Italy

later also manufactured by Lagomarsino

literature and links:

R. Atzbach shows details of this un-common pinwheel construction

Reese, Haertel: Numeria - Nur scheinbar eine Monroe-Tochter.

source: E.Anthes

source: HJ.Denker

model 5905

principle	pinwheel
capacity	10 (w/o cr) x 11 (w/o tc) x 21
input	full keyboard
prod. years
mach. built
features	clearance of result register can be split 9 - 12
dimensions	42 x 27 x 19 cm
weight	8 kg
known s/n	73 635

	for bigger and more pictures, click on the picture
		source: A.Jeanroy

model 7101

principle	pinwheel
capacity	10 (w/o cr) x 6 (w/o tc) x 14
input	full keyboard
prod. years
mach. built
features
dimensions	34 x 22 x 20 cm
weight	6.4 kg
known s/n	39.135, 41.659, 44.664

	for bigger and more pictures, click on the picture
		source: HJ.Denker

model 7903

principle	pinwheel
capacity	10 (w/o cr) x 11(w/o tc) x 21
input	full keyboard
prod. years
mach. built
features	clearance of result register can be split 9 - 12
dimensions	42 x 27 x 18 cm
weight	7 kg
known s/n	41 957

	for bigger and more pictures, click on the picture
		source: A.Jeanroy

Dixi (1940)

manufacturer: AB Dixma, Malmö (S)

principle	tooth rack
capacity	10 (w/o cr) x x 11
input	10 keyboard
prod. years	1940 - 1963
mach. built
features
dimensions
weight
known s/n

	for bigger and more pictures, click on the picture
		source: I-L.Thorberg

last updated: 21-Feb-12