US1017843A - Transfer mechanism for calculating-machines. - Google Patents

Description

G.JQBARRETT.

TRANSFER MECHANISM POR'OALOULATING MACHINES.

APPLICATION FILED MAY 29. 1911.

1,017,843. v Patented Feb. 20, 1912,

4 SHEETS-SHEETJ.

' anuentov G. J. BARRETT. TRANSFER MECHANISM FOR CALCULATING MAGHINES.

APPLIGA'IION FILED MAY 29. 1911.

Patented Feb. 20, 1912.

4 SHEETS SHEBT 2 sh wentoz Wituum G.J.BARRETT. TRANSFER MECHANISM FOR CALCULATING MACHINES.

Patefited Feb. 20,1912;

* .4 SHEETS-SHEET 3.

APPLIUA'TION FILED mama. 19'11.

G. J. BARRETT. TRANSFER MECHANISM FOR CALCULATING MACHINES.

APPLICATION FILED MAY 29, 1911. 1,017,843.

4 SHEETS-SHEET 4.

@lvwantoz Whine/sou Patented Feb. 20; 1912.

GLENN J. BARRETT, OF GRAND RAPIDS. MACHINE COMPANY, OF GRAND ICHIGAN, ASSIG-NOR TO BARRETT ADDING RAPIDS, MICHIGAN.

TRANSFER MECHANISM FOR GALCULATING-MACHINES To all whom it may concern.

Be it known that I, GLENN J. BARRETT, a citizen of the United States, residing at Grand Rapids, Michigan, have invented certain new and useful Improvements in Transfer Mechanism for Calculatingfila U. S. Patent No. v976,336, issued November 22nd, 1910, although the improvements are also adapted to other designs. The objects of my invention are, first, to provide such a transfer device with coacting parts which interlock and coact to eliminate the possibility of overthrow orcarrying, prematurely. Second, to provide in such a transfer mechanism an adjustment means for the utilization of the transfer movement of any dial section, for the further purpose of counting the items.

Further objects .-relating to details and I operation Will hereinafter appear.

I acomplish the objects of my invention by the devices and means described in the following specification.

Iv The invention is clearly defined and pointed out in the claims.

A structure which is sufliciently illustrative of the preferred embodiment of my invention is shown in the accompanying drawing, forming a partof this invention in which:

Figure I is a detail longitudinal sectional view through an adding machine embodying the features of my invention. Fig. II is a detail side elevation view of the dial :and' transfer mechanismftaken from the right on a line corresponding to line 11 of Figs. III and VI. Fig. III is a detail front view of two dial sections, the carrying and other parts being broken away. Fig. IV is a view similar to Fig. II except that it. is

taken from the left-hand instead of from the right-hand side, on a line corresponding to line 1-1 of Fig. III. Fig. V, is a partial detail sectional View looking in the direc- "tion of the little arrows, taken on a line Specification of Letters Patent. Application filed May 29, 1911.

transfer mechanisms for adding devices,

am that appearing in 976,336, of November 22, 1910, and is controlled by a spring 21.

Patented Feb. 20, 1912. .Serial No. 630,111.

corresponding to line 55 of Figs. II and IV. Fig. VI is a detail plan view of a fragment of the key hoard showing my counting switch means, the switch lever and adjacent parts. Fig. VII is a rear view of the pivoted transfer or carrying stop l. Fig. VIII is a partial detail enlarged view of the transfer and carryingstop mechanisms showing the relation of the parts. Fig. IX is an enlarged detail sectional view, taken on aline corresponding to line 8-8 of Fig. VIII, of the cam grooved end of the transfer trip, showing the pin 43 on the swinging trans fer stop at.

In the drawings, similar numerals of reference refer to similar several views and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring tothe numbered parts of the drawing, the casing l of the same form my former Patent No.

. P vided-with a set of keys 2 suitably disposed within the casing, with projectingbuttons, and provided with stop means 3 on their lower ends to engage and control the digit slides 4 by engaging the stops 5 thereon.

/ the same being connected by suitable ex A compensating spring 8 is provided, and

a slide 9 having power for effecting posed to cooperate with a spring 10 for storing of the transfer is also dissaid slide.

mechanism. Push bars 11 are associated with the slide 9 and spring 10, asin my former patent. A dial gear 13 is provided and associated with a sector. 14 with which the rack' 7 meshes, the same being supported on a suitable cross .rod 15. The dial gear 13 meshes with the pinion 16, disposed and connected tothe side of the dial wheel 17. the pinion 16 and dials 17 being carried on the rod or shaft 18. A look 19 is provided for these parts, and an engaging pawl 90 is carried by the sector for coupling the sameto thejdial gear 13. This pawl :20 is An actuatin transfervcam 22 consisting of three radian A pick-up bail 12 is also incorporated in the.

parts throughout i the 4 s2, and I also on the arm 25, by connecting to the therefore, that when transfer stop 25 parts being supported on the shaft 'or rod swinging arms, supported on the shaft 15, is provided with a cam groove 23, forming an inclosed cam for controlling the transfer parts. A digit stop 24 normally abuts the swinging at 30 on the arm 29, these 26. A downwardly-depending finger 27 projects from transfer stop 25, and has alaterally-extending pin 28 which cooperates in the cam slot or. groove 23, and. is actuated thereby. A catch 31 is pivoted on the rod a spring 33 puts tension thereon and upwardly-projecting portion 25 then of. This completes the enumeration of the parts of the transfer mechanism, and it is believed that the parts to which my improvements relate are adequately described. A complete understanding of the entire machine can be readily had by a review of my said former patent, which, it is believed, would unnecessarily burden the present description,

The switch mechanism for disengaging the transfer means at. a given point and making use of the same as a counter will now be pointed out.

A switch lever 35 ispivoted at 36, and an arm 37 is disposed underneath the same and coupled to the arm 35 by the upwardly-extending lug 38 extending through a slot in the top of the case. The arm 39 extends downwardly and forwardly, and is formed into a cam 40 having a depression 41 for engaging and acting'upon the upper end 25 of the swinging stop 25, as clearly appears in Figs. I, II and VII. It will beseen, the, switch is turned to one side or the other, owing to the fact that the cam is a double cam, it will act upon this transfer stop 5 25 and permit this operationof the transfer mechanism at this point whenever an item is put into the machine. Therefore, the dial space to the left of the particular switch will become a coun-' 'ter for the operations or items which are put into the right-hand portion of the machine.

. ers,

A pawl 42 is pivoted on the rod 26and copin 43 on each dial, in conjunction with the reset mechanism. I deem it unnecessary to describe these parts further, as my invention has nothing to do with these details.

That the advantages of my invention may I desire to remark that in an adding pp l, machine such. as is covered in my Patent 976,336, it is quite essential that the transfer parts, especially the dial gears and drivshall fit perfectly otherwise, in rapid work, the cam. member will swing a little farther than it should by reason of the lost motion, and the actuating part thereof will strike the swinging transfer stop a hammer blow with suflicient forceto drive it back independently of the movement of the cam,

far enough to allow the digit stop an unnecessary additional movement, which will be imparted to the dial of thenext higher denomination. A common expedient to overcome this difficulty is the use of a speed gov erning means to regulate and retard the speed of a dial part. This is objectionable, as it means a slower machine and one requiring an extraordinary amount ofpower to operate. My invention overcomes this difficulty by the use of the grooved cam en gaging a pin, which prevents the overthrow in the manner gle cam might-be supported on the transfer mechanism, but I prefer to divide the'dial into three parts, and in place of numbering that I have indicated. A sin-- 1 'to 10 to complete the circumference, have three number groups of 1 to 10, or thirty numerals in all on my dial.

This particular construction of transfer. mechanism lends itself especially well to the dividing of the machine when utilizing a portion at the left-hand side as a counter for the items. parts,- by their structure, accomplish the quite. difierent objects of my invention, viz., the effective. avoidance of overthrow and a counter means for the items introduced.

--With regard to the cam structure ofthe transfer mechanism, I desire to state that thesame might be reversed and a pin be put upon the cam arm and the groove at a suitable angle be formed in the swinging transfer stop. As long as the parts are coupled together bycam or grooved action,

It is thus seen how the same that is all that is required with the cam closed,-so that lost motion cannot occur from the blow.

Having thus described my invention, what I claim as new and desire to secure by Let- 'tersPatent isz i In a calculating board and accumulating dials, a transfer mechanism for carrying over the tens from one dial to another, comprising a reciprocating digit stop, a swinging transfer stop normally adapted to arrest the movement of said reciprocating digitstop in one direc-.

tion, means for moving said swinging trans-. fer stop out of normal engagement with said reciprocating digit stop comprising a rotary cam with an engaging groove in the side thereof, a pin extending from said swinging transfer stop adaptedto cooperate with said cam groove, and adjustable means for holding said swinging stop out of normal engagement with said reciprocating dlgit stop and out oicontact with said cam,

disposed on the key board, a double cam car- 'ried by said lever normally outof engagemachine having a key comprising a cam lever having a finger piece to move said swinging transfer stop when w 'cumulating dials, carrying over the tens from one dlal to ansaid cam lever swings in either direction away from normal, substantially as described and for the purpose specified.

2. In a calculating machine having accumulating dials, a transfer mechanism for carrying over the tens from one dial to another, comprising a reciprocating digit stop, a swinging transfer stop normally adapted, to arrest the movement of said reciprocating digit stop in one direction, means for moving said swinging transfer stop out of normal engagement with said reciprocating digit stop comprising a rotarycam, a pin extending from said swinging transfer sto adapted to cooperate with said cam, and adjustable means for holding said swinging stop out of normal engagement wit-h said reciprocating digit stop and out of contact with said cam, comprising a cam lever having a finger piece disposed on the key board, a cam carried by said lever normally out of engagement with said swinging stop, but adapted to move said swinging transfer stop away from normal, substantially as .described and for the purpose specified.

3. In a calculating machine having aca transfer mechanism for other, comprising a reciprocating digit stop, a swinging transfer stop normally adapted to arrest the movement of said reciprocating digit stop in one direction, means formoving said swinging transfer stop out of normal engagement with said reciprocating digit stop comprising a rotary cam withan engaging groove in the side thereof, and a pin extending from said swinging transfer stop adapted to cooperate with said cam groove, substantially as described and for the purpose specified.

4. In a carrying transfer mechanism for a calculating machine, the combination of a digit stop, a movable transfer stop to nor-- mally engage and arrest the movement of said reciprocating digit stop in one direc-.

tion, and transfer means for moving said movable transfer stop out of normal engaging relation, comprisinga grooved cam, and a projection from said transfer stop adapted to,co6perate with said cam groove, substantially as described.

5. In a carrying transfer mechanism for a-calculating machine, the combination of a reciprocating digit stop, a movable transferstop normally adapted to arrest the movement of said reciprocating digit stop in one direction, andineans for moving said movable transfer stop from arresting relation with said reciprocating member, con'iprising a rotary member and a projection and slot connection between said rotary member and said movable stop, substantially as described.

(i. In a carrying transfer mechanism for digit stop, "mally arresting said reciprocating digit a calculating machine, the combination of a digit stop, a movable transfer stop normally adapted to arrest the movement of said reciprocating member, a rotary member carrying a cam adapted to contact, and cooperate with said movable transfer stop, and an internal cam means carried by said rotary member for preventing any further movement to said movable stop beyond that imparted by a rotation of said rotary member.

7. In a'carrying transfer mechanism for a calculating machine, the combination of a reciprocating digit stop, a movable transfer stop normally adapted to arrest the movement of said reciprocatory member, a rotary member, contact actuating connectionbetween said rotary member and said movable stop, and an internal cam means for preventing .any excess movement of said movable stop beyond that imparted by said contact actuating connection, substantially as'describ'ed'.

8. In acarrying transfer mechanism for a calculating machine, the combination of a reciprocatory digit stop, a movable-transfer stop normally adapted to arrest the movement of said reciprocatory digit stop, a rotary member, contact actuating connection between said rotary member and said mov able transfer stop, and means comprising a guiding groove member and a guided member for preventing any excess movement of said movable stop beyond that imparted by said actuating connection between said rotary member and said movable transfer stop, substantially as described.

9. In a calculating machine, the combination of accumulating dials, a reciprocating a movable transfer stop for norstop in one direction, means moving in synchrony with said dials for moving sa' movable transfer stop from normal arresw ing position when fer point thereon, and means for holding said movable transfer stop out, of arresting position with reference to said reciprocating digit stop, comprising a lever carrying a cam adapted to contact with said movable transfer stop, and a linger piece connection to said lever, substantially as described.

10. The combination with a carrying transfer mechanism for a calculating machine, having a reciprocating digit stop and a movable transfer stop for normally arresting the movement of the same, of means for holding said movable transfer stop out of cooperating relation with said reciprocating digit stop, comprising a. lever and cam, and a finger piece connected to said lever, substantially as described.

11. The combination with a carrying transfer mechanism for a. calculating masaid dials pass the trans-- chine, having a reciprocating digit stop and my hand and seal in the presence of two a, movable transfer sjtop for norni fally arrefstwitnesses. ing the movement 0 the same, 0 means or holding said movable transfer stop out of GLENN E 5 cooperating relation with said reciprocating Witnesses:

digit stop, substantially as described. LACY H. SERGENT,

In Witness whereof, I have hereunto set LULU B. VALENTINE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Yatehts,

' Washington, D. C.

Images