US931410A - Adding-machine. - Google Patents

Description

o. W. GooGH.' ADDING MACHINE. APPLIOATIONPILED 00T. l0, 1907.

93 1 ,410, Patented Aug. 17, 1909.

UNITED sTATEs PATENT OFFICE.

CLAIBORNE W. GOOCH, OF LYNCHBURG, VIRGINIA, ASSIGNOR TO BURROUGHS ADDING MACHINE COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

Asume-MACHINE..

specification of Letters Patent. Application med october 10,1901. serial No. 396,854.

Patented Aug. 17, 1909.

To all whom 'it lmay concern.'

Be it lgnown that I, CLAIBORNE W. GoocH, a citizerf of the United States, residing at Lynchburg, in the county of Campbell and State of Virginia, have invented certain new and useful Improvements in Adding-Ma-- chines, of which the following/is a specification.

The present invention relates more particularly to the recording or printing mechanism of an adding machine, and the object is to providean improved form of means for regulating the force of the blow of .the hammers which drive the type against the platen. This is desirable in order toprovide for preperly adjusting .the machine to the work 1n hand. Thus when a considerabie number of carbon copies are to be made greater force in the hammer blow is necessary ythan when a less number of carbon .ce ies or no carbone at all are to be .produc Ofv course with the 'hammer-actuating devices arranged to eect a printing blow suiiicient for the maximum number vo'f carbon ccxipies the machine would be equip d tope Work without a solutely re orm all sorts ef 'ing different adjustments for different k1 s of work in hand. However, .the use of the machine with hammer-actuating springs under eX- oessive tension would be productive' of undue wear and so it is desirable te provide for egug lating the tension of such springs accordlng to the requirementsof the work to be rperformed.

In the resent instance the invention is.

shown an described as adapted te a wellknown form of adding machine,A to-Wit the Burroughs machine exemplified in rior pat- 'ents N0s.504,963and 565,078 issue September 12, 1893. It is tobe understood, how- 1 ever, that the invention may be adapted to other types of adding machines;

Burrou ty to show .the resent invention em odie therein; and Fig. 2 represents A a partial cross-section ef such machine, the

nt elevation.

. uor arrangement from vthose ployed in the well-known .Burrou maf chine and hence require no extende discussion although they Will be briefly referred to inasmuch as the new parts for carrying out the present` invention are' more or less directly associated with them.

familiarly Aemsol The reference numeral 600 designates a 5 cross-shaft on which are loosely hun aseries of levers 611 with segmentai rear en s carryin 'type' lates 618.

he re erence numeral 1798 designates a roller platen against which the t plates are driven by hammers 715, the latter bein pivotally mounted and operatively engager With the drivin levers t716, also pivotally mounted. The -atter have springs 780 connected with them and tending to 1m l them rearwardly and thus drive the I rs against the type plates. .are normally restrained by iatciies 717 pivoted upon a suitable cross-shaft and engagingl the upper ends of the driving levers respectively. The dis `lacement of these latches to release the emmers is bron ht Said driving levers about'through paWls 718'engaging shoul ers ef the iatches, these pawls being pivetally mounted upon thecross-.bar or rod of a bail 719 which vibrates at each operation of the machine. The springs 78@ are connected with said paWls s o as to serve the double purpose et actuating the driving levers 716 and holding the pawls in engagement with the latches.

are retracted by a bail 712 which is connected by a link 729 with a crank plate 801 on a. rock-shaft 80@ which oscllates in everyoperation pf the machine.

All of the 4above designated mechanical elements are volid and they operate in -a' welli known manner. However, in' the present i instance'the springs 780 are mede consider- In -the accompanying drawings which form -partlof thisspeciiication Figure 1 represents l 1n left side elevation, partly in section, a suff iicientsportion of. an addinginachine ofthe ably stronger than corresponding springs usually employed. These springs in the present instance are made strong enough to drive the hammers with the v maximum force. As before stated undue weer would result from the action of such springs when the workin hand does not require such force in the hammer bloisT as when less than the maximum number of carbon copies are to be made-or no carbon co ies at Ia In carrying out t f present invention The hammers and their drivers means are provided for lessening the force of the springs 7 80 in varying degree accordin to the work in hand. Thus additiona i springs `2 are attached to the forwardly-extending portions of the driving levers 717 so as to act in' o position to the springs 780. These additiona springs are attached to the cross-rod of a bail-I5 whose side arms areY secured to a rock-shaft 4 j ournaled in the base casting 1065 of the machine. When the sprin s 2 arein line With the bail as illusfrom causing an 4eective hammer blow.

The adj'ustment of the springs 2 is brought f about throu h theturning ofthe rock-shaft 4 and to fac' itate this said shaft has onel end projecting beyond the base casting of the .machine and equipped with a thumb-piece segmental plate 6 with a seriesoil perfora,

or knob 5. For t e purpose of locking the bail in different adjustments therev is secured to the rock-shaft just in rear of said knob a tions or apertures 7 and there is mounted upon the base casting1065 a screw stud 8 des1 ned to engage any one of said a ertures.

T e rock-shaft 4 is permitted a slig t longitudinal movement sufficient to disengage the late 6 from said pin or stud so that it may iie turned to diii'erent positions and the plate rengaged with the stud. A spiral spring 9, surrounding the shaft between the collar thereon and a part of the base casting 1065,

.normally holds said plate engaged with the stud. y

It will be seen that the above-described construction provides means under control ofthe operator whereby the force of the hammer blow can be readily regulated accordin to the requirements of the work in hand an thus the object of the invention is fulfilled.

While the particular form of means'above" described is well adapted to the fulfillment ofy that object it is nevertheless to be under-v 'l stood that modifications may be made without necessarily departing from the scope of the invention.

, What .is claimed is:

1. In a machine of the character described, the combination of a hammer adapted to strike a printing blow, a s ring for actuating said hammer to elect suc blow with maximum force, and means for counteractlng sald spring in varying degree.

2. In a machine ofthe character described,

the combination of a hammer adapted to strike a printing blow, a spring for actuating spring for actuating spring acting in. opposition to the iirs't-menthe combination of a hammer adapted to strike a printing blow, a spring for actuating said hammer, a second spring acting upon said hammer, and .means for adjusting the latter s ring to varythe force ott e rinting blow e ected bythe rst-mentione spring.

4. In a machine ofthe character described,

vthe combination of a printing hammer, a

spring for actuating e same, j a second spring acting in opposition to the first-menltloned s ring, and means for varying thetension of t e second spring to vary the force of the printing blow ofthe hammer.

5. The combination with a platen, type, a i

pivoted hammer to drive the type against the platen, a pivoted driver for said hammer, and aspring actuating said driver.; of a second sprlng applied to the latter in opposition tothe inst-,mentioned spring, and means for varying the tension of said second spring.

6. In a machine ofthe character described, i

the combination of a spring for actuating t e same, a second spring acting in opposition to the irst-mentloned s ring, and means for varying the tension of t e second sv rin to vary the force of the printing blow o theiammer, said means comprising an adjustable arm supporting one end of sai second s ring.l

7. In a machine o the character described, the i combination of. a rinting hammer, a spring for actuating t e same, a second spring acting in opposition to the irst-mentioned s ring,l and means for varying the tension of t e second s rin to vary the force of the printing blow o theiammer, said means comprising a pivoted arm supporting one end of said second spring and adapted through itspivotal movement to vary the vtension thereof.

8. In a machine ofthe character described, the combination of a printing hammer, -a t e same, a second tloned s ring, and means for varying the tension of t e second s ring to vary the force of the vprinting blow o the hammer, said means l comprising an adjustable arm supportin one end of said second spring, and means for ocking said arm at diderent adjustments. 1

rinting hammer, a

9. In a machine of the character described 'i the combination of a rinting hammer, a spring for actuating 4t e same, a second spring acting in opposition to the first-mentloned spring, means for varying the tension of the second spring to vary the force of the printing blow of the hammer, said means comprising a pivoted arm supporting one end of said second spring and a apted through.

its pivotal movement to vary thetension thereof, and -means for locking said arm at different adjustments.

10. The combination with a platen, type, a pivoted hammer to drive the ty e, against the platen, .a pivoted driver for said) hammer, and a spring actuating said driver of a second spring attached at one end to the latter and acting in opposition to said iirst-mentioned spring, and an arm supportin the other end-of said second spring and a justable to vary the tension thereof.

11. The combination with a platen, type,

` a pivoted hammer to drive the type against a pivotedhammer to drive the type against the platen, a pivoted driver for said hammer,

and a springactuating said driver; of a second sprmg attached at one end to the'latter and acting in opposition to saidirstmentioned spring, an arm supporting the' other end of said second spring and adjustable to vary the tension thereof, and meansfor locking said arm at different ad'ustments.

13. .The 'combination wit a platen, type, a pivoted hammer to drive the tyae against the platen, a pivoted driver for sai hammer, and a spring actuating said driver; of a second spring attached at one end toy the latter and acting in opposition to said -irst-mentioned spring, a plvoted arm supporting the other end of said second spring and adapted through its pivotal movement to vary the tensionthereof, and means for locking said arm at different adjustments.

CLAIBORNE GOOCH.

Witnesses:

E. P. MILLER, v J. D. OWEN.

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