US1483330A - Paper carriage for adding machines - Google Patents

Description

Feb. 12, 1924;

C.E.BROMAN PAPER CARRIAGE FOR ADDING MACHINES -Filed March 5 nane CHARLES E. BROMAN, 0F GRAND RAPIDS, MICHIGAN, ASSIGNOB, BY MESNE ASSIGN- MENT S, TO ADD-INDEX CORPORATION, A CORPORATION OF DELAWARE.

PAPER CARRIAGE FOR- ADDING- MACHINES.

Application filed. March 5, 1921. Serial no. 44 95995.

To all whom it may concern:

Be it known that I, CHARLES E. BRoMAN, a citizen of the United States, residing in Grand Rapids, in the county of Kent and State of Michigan, have invented a new and useful Improvement in Paper Carriages for Adding Machines, of which the following is a specification.

My invention relates to adding machine carriages, with a view to improve the construction and operation of the same, while the manufacture is thereby simplified and made more economical.

In order to make the invention more clearly understood, I have shown in the accompanying drawings means for carrying the invention into practical effect, Without limiting the improvements in their useful applications to the particular construction which, for the sake of example, I have delineated. In said drawings- Figure 1 is an end view of the carriage and track removed from the machine frame.

Fi 2 is a plan'view of the fixed track on whic the carriage is to be mounted, showcarriage-actuating spring.

ini the I 1g. 3 1s a vertical cross section on line IHHI of Figure 2.

Fig. 4: is a similar view on line IVIV of Figure 5, showing the part of the machine frame to which the track is to be attaehed, so as to be removable for adiustment and repair, but so as to be fixed during the use of the machine.

Fig. 5 is a plan View of said frame part.

Fig. 6 is a bottom plan view of a portion of the track.

'Fi 7 is an enlarged side view of the ad justa 1e pulley journal.

Fig. 8 is a bottom plan View of said journal.

The illustrated embodiment of my improvements is designed for adding machines, in which the printing type operate in a horizontal rearward direction, and the carriage for the paper whereon the printing is to be performed traverses in horizontal transverse directions, so that the paper is presented to the rear vertical type faces; the said movement of the carriage being ordinarily for the purpose of tabulating numbers in columns and (or) adding together the variousnumbers in a line with a printing of the total in the last column. For the purpose of clearly understanding my improvements, it is not necessary to show the adding machine or the tabulating devices by which the carriage is caused to make relatively wide step by step movements, from column to column, during the printing of several numbers in the same line; and the illustration is mainly confined 3) whereupon the track is slid horizontally to the lef (downward in Figure 5) to bring the pins 10 into the narrow parts of the slots 9 with their heads tightly engaged under the top plate 8.

A look is provided against the disengagement of the pins 10 from the narrow parts of the slots, unless such disengagement be desired, consisting of a latch spring 12 secured at- 13 to the track and adapted to snap into place with its edge opposed to a pin 14 attached to the frame plate 6 and passing up through a slot 15 in the track so that it may oppose the latch spring 12.

lhe track 11 is preferably of sheet metal suitably formed at its front and rear edges with anti-friction ball-retaining grooves 16 for the rolling of balls 17 on which carriage 18 is supported. a

This carriage is preferably of sheet metal and has a bottom plate 19 and end plates 20, the paper roller 21 being journaled in the latter.

22 is a long and relatively fine steel helical spring (Figure 2) which is attached at one end to a pin 23 fixed on the track 11, passes around a grooved pulley 24 and has its other end attached to a pin 25 fixed on the under side of the carriage. The journal 26 of the pulley is fixed to the track 11, and the pulley is mounted there-on by means of antifriction balls 27. The construction and arrangement are such that the spring is sensitive in operation, and has a long'contracting and expanding movement, sufiicient for the desired movement of the carriage, such movement being distributed throughout the whole length of the spring. Also it results that the tension of the spring and its pull on the carriage are more constant and do not vary so much as they would if the spring were not doubled.

Means for adjusting the tension of the spring are provided, comprising a flattened slidable member 28, and a screw 29, both formed on the journal 26, and is a slot formed in the track in which the member fits so as to be adjustable lon itudinally of the slot. 31 is a washer app ied on the screw and 32 a motley which the journal 26 may be clamped. in place when it has been adjusted to give the spring such force as will move the carriage quickly from one tahulat ing stop to another without undue jar in sto ping:

t will be understood that my improvement does not exclude an arrangement in which the journal 26 of the pulley 24 is fixed to the carriage.

What I claim is 1. In a paper carriage construction for adding machines, the combination of a track, a carria 'e mounted and slidable thereon a pulley having means whereby it is adjustably mounted on the track, and an extended and doubled helical spring passed around said pulley, and having one end attached to the track and the other end attached to the carriage.

2. In a paper carriage construction for adding machines, the combination of a track, a

naeaeeo carriage mounted to slide thereon, a pulley mounted on the track, and a longitudinally extensible elastic element passed around the pulley and having means at one end connecting said element with the track, and having means at the other end connecting said element with the carriage.

3. in a paper carriage construction for adding machines the combination of a track, a carriage mounted movably' on the track, a longitudinally extensible elastic element doubled on itself and connected with the track and with the carriage, and a pulley holding the elastic element at its point of doubling.

4. In a paper carriage construction for adding machines, the combination of a frame element having fixed interlocking means for the slidable interlocking therewith of a carriage track, and a paper carriage mounted on said track and removable therewith as a unit and having interlocking means for engaging withthose of said frame element.

5. In a paper carriage construction for adding machines, the combination of a fixed frame element," and a track and a paper carriage carried thereby said track hem slidable into interlocking position on said fixed frame element, means on said frame element and track respectively for said interlocking, and a latch for holding said track from sliding relative to the frame element.

C. E. BRQMANQ

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