US1225654A - Adding-machine. - Google Patents

Description

H. LANDSIEDEL.

ADDING MACHINE.

APPLICATION FILED FEB. 28, 191e.

Patented May 8, 1917.

nnnnnn;

nnnnnn i UU H H H D irll l um u nuuuuuu uuuuunn uuuunun unuuuun ununnu uuuuuun @Hummm Hummm-uu gummi] (Qlvgnnnnnn lnnnnnn Hlm-fk. Y

'fl MIMI Nmllllllmlllll UNITED sTATEsI PATENT oEEroE.

HARRY LANDSIEDEL, 0F CINCINNATI, OHIO, ASSIGNOR TO THE DALTON ADDING MACHINE COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

\ ADDING-MACHINE.

Specication of Letters Patent.

Patented May `8, 1917.

Application :filed February 28, 1916. Serial N o. 80,941.

T all whom it 'may concern.'

Be it known that I, HARRY LANDsIEDEL, a

citizen of the United States, residing at the ing is a specication.

This invention relates to adding machines. The invention relates specifically to that class'of adding machines in 'which' the diferential mechanism comprises a movablel carriage in which are mounted series of stops settable by operation of the keys to represent the digits of the numbers to be added or listed by the machine.

The object ofthe present invention is to provide 4a differential mechanism of the character mentioned, in which the movable stops are arranged in series and are retained in their different positions by spring platesv mounted in the carriage and having arms engaging with' appropriately formed portions on the stops, effectively to retain the stops in their raised or lowered positions,

and adapted to yield to pressure applied to the ends of the stops to move them to and from their starting points.

In the drawings, Figure 1 is a plan view of a carriage embodying the present invention.

Fig. 2 is a view of the carriage inverted.

Fig. 3 is an inner side elevation of the carriage. v

Fig. 4 illustrates the outer side elevation of the carriage.

Fig. 5 is a sectional view which is enlarged with respect to the preceding views of the drawing.

Fig. 6 is a sectional view on the line 6-6 of Fig. 5.

Fig. 7 is a perspective View illustrating a transverse series of stops and the coperating spring plate whose arms engage with the stops to hold them in their different ade justments. i

A machine of the type in which this invention is adapted to be embodied is disclosed in Hopkins Patent, No. 1,039,130, dated September 24, 1912, and which is commercially known as the Dalton adding machine. The machine disclosed in the patent and the Dalton adding machine on the market each includes a differential mechanism comprising a carriage under control of numeral keys, and. containing pins arranged in transverse series with respect to the machine and in longitudinal series with respect to the machine. All the pins of each transverse series correspond to the same digit so that the pins of the several transverse series represent the several digits. rIhe pins i of the longitudinal series are arranged in numerical orders and the carriage is moved yin the well understood manner to position y,the pins in the dili'erent numerical orders,

as required to control the operations of the adding and listing mechanisms. f

The subject-matterof the present invention is an improvement upon the differential mechanism vdisclosed in the Hopkins patent mentioned and is adapted to be embodied in anyL of the machines of the general type disclosed in that patent, such for instance as the Dalton adding machine which is on the market.

As illustrated in the drawings the'carriage includes an upper wall 1 and a lower wall 2, both of which are connected to the side walls-3 of the carriage. The carriage is supported by rollers 4l which are adapted to operate upon the usual rails 5.

The differential stop pins 6 are mounted in a longitudinally transverse series in the carnage and extend through openings in the upper and lower plates, and are depressible to an extent to place their upper extremities approximately flush, or in the same plane, with theupper surface of the plate 1. Downward movement of the stop pins is limited by lugs 7 formed on the pins respectively, and adapted to engage with the lower plate 2, as will be understood by reference to Fig. 6. Upward movement of the pins is limited by lugs 8 carried by the pins respectively, and adapted to engage against the under surface of the plate 1. The pins are normally in depressed position and arel ings 12 in the upper and lower plates 1 and 2 of the carriage. Each detent member is formed from a single plate of resilient metal having the detent arms 9 integrally connected wlth the transverse part 10 which is pressed so that it is arcuate in cross section,"

ico

which is also the form of the supporting parts 11. By this construction I am enabled to utilize thin metallic plates, the strength and resiliency of which are made appropriate to the duties required of them by pressing the parts 10 and 11, so that they are arcuate in cross section, thus increasing their strength. There is one of the detent arms 9 for each pin of the corresponding transverse series and said arms are formed with angular engaging parts 13 at their lower extremities which are adapted to engage with the oblique upper and lower edges of the projections 14 on the corresponding ins. The engaging parts 13 and the projections 14 are arranged in such proportion to each other and to the extent of movement of the pins, that when the pins are in their lower or depressed positions the lower sides of the engaging portions 13 engage against the oblique upper edges of the projections 14, thus retaining the pins in their lower positions until they are raised by operation of the usual numeral keys. lVhen the pins are raised by operation of the keys, the detent arms 9 yield to permit the projections 14 to pass the engaging portions 13. The extent of upward movement of the pins is such that in their upper positions the oblique lower edges of the projections 14 are seated upon the engaging portions 13 of the detent arms, so that the same spring device is effective to retain the pins in their different positions and is also effective to complete the movement of the pins whenever the apeXes of the projections 14 pass the points of the engaging portions 13.

The differential mechanism constructed and arranged in this manner is light and durable, and does not easily become disarranged or disabled.

The differential carriage described may also be readily combined with or embodied in the machine of the Hopkins patent and the Dalton addinu machine to take the place of the carriage illiistrated in said patent and employed in said machine.

IVhat I claim and desire to secure by Letters Patent is y 1. In an adding machine, differential mechanism comprising transverse series of longitudinally movable stop pins, a resilient supporting device adjacent to each series of pins, a series of resilient arms carried by said supporting device, and projections on said pins engaging said arms.

2. n an adding machine, differential mechanism comprising series of longitudinally movable stop pins, a resilient support adjacent to each series of-pins, resilient arms extending from said support, and projections on said arms engaging said pins, whereby said arms will retain said pins in their lower position. l

3. In an adding machine, differential mechanism comprising series of longitudinally movable stop pins, a resilient support adjacent to each series of pins, resilient arms extending from said support, and projections on said arms engaging said pins, whereby said arms will retain said pins in their upper positions.

4. In an adding machine, differential mechanism comprising series of longitudinally movable stop pins, a resilient support adjacent to each series of pins, resilient arms extending from said support, and projections on said arms engaging said pins, whereby said arms will retain said pins in their lower and upper positions.

5. In an adding machine, differential mechanism comprising a carriage having upper and lower wall plates, series of vertically movable stop pins carried by said plates, means for limiting upward and downward movement of said pins, a resilient support adjacent to each series of pins, and resilient arms on said support engaging and retaining said pins in their lower positions.

6. In an adding machine differential mechanism comprising upper and lower supporting plates, series of vertically movable stop pins carried by said plates, parts on said pins limiting upward and downward movement thereof by contact with said plates, a support adjacent to each series of '.pins, resilient arms carried by said support,

and engaging portions on said arms arranged to engage and retain said pins in their upper positions.

7. In an adding machine, differential mechanism comprising upper and lower plates, series of vertically movable stop pins carried by said plates, projections on said pins for limiting movement thereof through said plates, aI transverse resilient support adjacent to each series of pins, resilient parts engaging said plates and retaining said support in position, and resilient arms in said transverse support arranged to engage said pins to hold them in their upper and lower positions.

' 8. In an adding machine, differential mechanism comprising upper and lower plates, series of stop pins carried by and movable vertically through said plates, projections on said pins for limiting movement thereof through said plates, detent devices vengaging said pins to hold them in their different positions, and resilient supports for said detent devices.

9. In an adding machine, differential mechanism comprising supporting plates, longitudinally movablepins carried by and movable through said plates, means for limiting movement of said pins relative to said plates, resilient detent arms engaging said pins, resilient supports for said arms, and

means whereby said arms will complete the final movements of said pins in both direc-y tions.

l0. In an adding machine, differential mechanism comprising upper and lower plates, a series of pins carried by and movable vertically through said plates, a pointed projection on each of said pins, detent devices engaging said pointed projections, and

ladapted to coperate therewith to complete the movement of said pins in opposite directions and to retain said pins in their diiferent adjustments, and a resilient support for all of said detent devices.

1l. In an adding machine, differential mechanism comprising upper and lower plates, series of vertically movable stop pins carried by and movable through said plates,

projections on said pins for limiting movement thereof through said plates, resilient supports adjacent to each series of pins, means in connection with said support engaging said plates to hold said supports in proper position, pointed projections on said pins, and resilient arms on said resilient supports arranged to engage said pointed projections to hold said pins in their upper and lower positions. 1

In witness whereof, I have signed this specification in the presence of two subscribing witnesses.

HARRY LANDSIEDEL. Witnesses:

R. D. BRYAN, B. C. HARRIsoN.

Images