US629381A

US629381A - Device for operating adding-machines.

Info

Publication number: US629381A
Application number: US68680998A
Authority: US
Inventors: John H Lovering
Original assignee: Individual
Current assignee: Individual
Priority date: 1898-07-25
Filing date: 1898-07-25
Publication date: 1899-07-25
Anticipated expiration: 1916-07-25

Description

No. 629,38l. Patented July 25, I899.

J. H. LUVERING.

DEVICE FOR OPERATING ADDING MACHINES.

(Application filed. July 26, 1898.)

(No Modu l.)

,WW O 1 UNITED STATES "PATENT OFFICE.

JOHN H. LOVERING, OF MALDEN, MASSACHUSETTS.

DEVICE FOR OPERATING ADDING-MACHINES.

SIECIFICATION forming part of Letters Patent No. 629,381, dated July 25, 1899.

Application filed July 25, 1898. Serial Nor 686,809. (No model.)

To alZ whom it may concern: A represents the adding-machine, mounted Be it known that 1, JOHN H. LOVERING, a upon a table, as usual when in use, and B the citizen of the United States, residing at Maloperating-lever on the right-hand side of the 5 den, in the county of Middlesex and State of machine. All the other parts indicated by 5 Massachusetts, have invented a new and useletters in the drawing are parts of my attachful Improvement in Devices for Operating ment. Adding-Machines, of which the following is a C is an arm attached to the lever B. specification. D and (Z are connecting-chains which secure My invention relates to a foot-power applia flexible connection between the compound IO ance for use upon certain machines requiring lever E and the arm 0 and the treadle. The

the movement of a lever, and is especially compound lever E is composed of the horiadapted for use in throwing the lever used in zontal parts E and E, the link K, and the the machine called the Burroughs addingcross-arm M. The cross-arm M is pivoted in machine. In these machines the operators the center, and the pivot is connected with 15 fingers press down keys to register the desired the table on which the machine rests. This figures, and when it is desired to add the arm M is pivoted to the lever E at M and to amounts and record their sum this is done by the lever E" at M. The ends of the link K a forward movement of the operating-lever. are pivoted to the ends of the arms E and This lever is made to return to its original E. The treadle F ispreferably pivoted at 20 position by means of certain springs inside G to the leg of the table, and the other end the machine. As the machine is a present of I moves within the guard II, which keeps operated the person using it must take his it against another leg of the table; but any right hand away from the keyboard, which other means of holding the treadle to the table is on top of the machine, and reach around on which the machine rests maybe used. For

2 5 to the back part of the right side of the ma convenience of use the chain d is attached to chine to find the lever and pull it forward and a stirrup which is fastened to the treadle F downward. This operation causes delay and and the operator places his foot within the some skill in the operator and considerable stirrup. In place of the chain (Z a rod may physical exertion, since the lever must be be used to connect the treadle with the lower 30 pulled against the force of the springs inside part E of the compound lever.

the machine. This machine is used in most lVhen the'operator has made certain figures cases by young women, and the physical eXerand desires to record their sum, he moves the tion of pulling the lever so often is very tiretreadle F, and the compound lever, with its some and often injurious to the operator. On connections,produces such a movement of the 35 account of the construction of this machine arm 0 that the operating-lever B is pulled and the peculiar action of the spring which forward in such manner as to make the maacts upon the operating-lever a special movechine do its work of recording the sum of the ment of the lever is required. The lever B figures made, 0 is pivoted at its lower end, and when it has As the operating-lever has to be moved very 40 been pulled forward for the purpose of operfrequently, need has been found of some apating the machine it is returned to its initial piiance for working it other than the hand of position, as shown in the drawing, by springs the operator; but many appliances that have within the bodyof the machine. Ihave found been tried have failed to secure the peculiar 5 by trial that no one of the treadles now in use motion of the operating-lever needed in the 5 will perform'the operation of throwing the Burroughs adding-machine lever in this machine. My appliance may be I am aware that there are a great many adapted for use upon other machines; but it kinds of pedals having levers adapted for opis constructed especially for the requirements erating certain parts of machines, and I do roo of the Burroughs adding-machine. I have not claim, broadly, a combination of a treadle 5o attained these objects by means of the mechwith a compound lever.

anisin illustrated in the accompanying draw-- hat I do claim as my invention, and Ge ing. sire to secure by Letters Patent, is-

1. In combination with a machine operated by a movable bar the arm C, the connectingchains D and cl, the compound lever E and the treadle 13 substantially as shown or described.

2. In combination with an adding-machine operated by a swinging lever, the arm 0, the compound lever E and a treadle, with means for attaching the treadle to the lever and the lever to the arm C, so that the motion of the treadle will be communicated to the arm 0, substantially as shown or described.

3. In combination with an adding-machine operated by a swinging lever, the arm C, the compound lever E, the treadle F, and means Vitnesses:

CHAS. ALLEN TABER, ERNEST B. CONANT.