US987920A

US987920A - Gapped gear.

Info

Publication number: US987920A
Application number: US57826510A
Authority: US
Inventors: Willard T Sears
Original assignee: NILES BEMENTPOND CO
Current assignee: NILES-BEMENTPOND Co; NILES BEMENTPOND CO
Priority date: 1910-08-22
Filing date: 1910-08-22
Publication date: 1911-03-28
Anticipated expiration: 1928-03-28

Description

W. T. SEARS.

GAPPBD GEAR.

APPLICATION FILED AUG.22,1910.

9K9@ i v l Patented Mar. 28, QM,

2 SEEETS-SHBET l.

Fig.

Minsses inenwr Miami! l.' ew?? 5 W. T. SEARS.

GAPPED GEAR.

APPLICATION FILED AUG. z2, 1910.

98%923@ Mmm@ Mar.28,1911.

2 SHEETS-SHEET 2.

Fig.. E

im' in @$58.9 mwn i mf W W Mmmm? T. .www

WILLARD T. SEARS, 0F PHILADELPHIA, PENNSYLVANIAASSWNQE 'EQ NlLES-BEMENT carica.

com) COMPANY. or JERSEY Gira-raw amasar.

l GAPPED GEAR.v

` vaiiia, have invented certain new and useful Improvements in Gapped Gears, of which the following is a specification.

This invention pertains to gears provided with a gap extending through the riiii and inwardly, such gears being frequently einployed in car wheel lathes designed for the turning of car wheels while on their axles, portions of the driving apparatus, including a gapped gear, surrounding the axle between the Wheels.

The invention relates to the system for inoving the patch which opens and closes the gap in the rim laterally to the plane of the gear. By laterally to the planeof the gear I mean in a direction contrary to or at an angle to the plane .of the gear, and

it- Will be-uiiderstood that I have illustrated in the drawings only one of several constructions Which may be employed to ,swing the patch laterally to the plane of the gear.

Figure l is a side view of a gapped gear` exeniplifying my invention, the patch being in closed position; and Fig. 2 is a. View of the front edge, the right-hand edge of Fig. 1, of the gear, the patch being shownin open position, and the closing cani being shown in section in a curved plane concentric with the axis of the gear.

To avoid confusion in delineation no teeth are shown in the gear in Fig. 2, and in Fig. 1, the teeth have been oniittedvat the patch and its neighborhood.

ln the drawings :-1,\indicatcsj the riin of the gear: 9., its hub: 3, the gap extending through the riin and inwardly, the gap, at the riin, having a convexupper Wall and a concave lower wall, the curvature of these walls being struck from a common center: 4, the patch adapted to bridge the gap at the riin, the patch having upper and lower surfaces to fit the curved surfaces of the Walls at the gap of the rimzv, a shaft mounted in the gear with its axisat right anglesto and above the axis of the gear, this shaft forming a hinge on which the patch inay swing into and out of the kgap: 6, an arm projecting from 'the patch and secured to the shaft: '7, a counterweight secured to the Shaft, oppositejthe patch and adapted to specification of Letters raient. Patented Mar., 2S, 191i." Application led August 22, 191C. Serial No, 578,265.

' serve in counterbalancing it, theA body of thegear being provided with an opening through which this counterweiglit may swing: 8, a latch-lever pivoted tothe gear. osite the side tol on the side of the gap 'op 9 ivhiclithe patch is hinget .fthe outer end of this latch-lever taking into a notch in .the d Y, inner lower portion of the patch when the.

patch is in closed position: 9, a spring acting on the latch-,lever and .urging it 'to iatehing position in the patch: 10, a cam-arm coiinected with ythe latch-lever: v11, a' iied pin or projection in the path of the cainarin and" adapted, as the gear turns in counter-clock Wise direction, to engage thecain-arin and release the latch-lever: 12, a recess in the `rear of the patch' to lighten the patch andpe'irnit of the vemployment of' a lighter Counteriveight: 13, the innermost portion of the patch, the sameengaging Within the riin of the gear and having arin 6 projecting from it: and 14, a fined cani presenting itself near the side `of the gear and adapted, as thec gear revolves in connter-clockwise direction, to be engaged by the open patchrand force the patch to closed position. i

in F ig. 1, assuming the gea-r to be turning i in counter-clockwise direction, the patch 'is `in closed position and the latch Vis on the point of release. The instant it is released the counterweight swings outward and swings the patch laterally out of the gap leaving the entire gap open, at which time, of course, the rotation of the gear is to be arrested, leaving matters in the condition -liave the gap open at each turn of the gear.

I claini:-- I 1. A gapped gear comprising, a gear provided with a gap extending through its rini and inwardly, the walls of the gap atatie" riin being concentric arcs, a patch haifi'ng.

concentrically curved upper and lower surfaces adapted to t andbridge the gap in the rini, a hinge-axis carried by the gear at right angles to the axis of the gear, an arm hingng the patch to said axis, and means for swinging the patch into and out of the gap, combined substantially as set ifortli.

9,. A gapped gear comprising, a gear provided with a. gap extending through its rim and inwardly, the walls of the gap at the riin being concentric arcs, a patch having coneentrically curved upper and lower surfaces adapted to lit and bridge the gap in the riin, a .hinge-axis carried by the gear at right angles to the axis ofthe gear, an arni hing-ing the patch to said axis, nicans for swinging the patch into and out of the gap, a latch to lock` the patch in closed position, and ineans for releasing said latch, combined substantially as set forth.

3. A ,gapped gear comprising, a'gear provided with a gap extending through its rini and inwardly, the Valls of the gap at the '20 rini being cmicentric arcs, a patch haying coneentrically curved upper and lower surfaces adapted to tit and bridge the gap in the rnn, a hinge-axis carried by. the gear at right angles to the axis of the gear, an arni hingiiig the patch to said axis, means for swinging the patch into and out of the gap,

a latch to lock the patch in closed position,

and a fixed projection iii the path of a part of the latch to serve in releasing the latch as the gear turns, combined substantially as set iorth.

4. A gapped gear con'iprising, a gear providedwith a gap extending through its riin and inwardly, the wallsci the gap at the rini being concentric arcs, a patch having coneentrically curved upper and lower snriaces adapted to fit and bridge the gap in the riui, a hinge-axis carried by the gear at right angles to the axis of the gear, an arm hingiiig the patch to said axis, a counter weight connected with the patch, and means for swinging the patch into the gap, coinliined substantially as set' forth. i

5. A gapped gear comprising, a gear provided with a. gap extending through its riin and inwardly, the Walls of the gap at the riai losing concentric ares, a patch having concentrically curved upper and lower sur faces adapted to Ht and bridge the gap in the riin, a. hinge-axis carriedby the gear at right angles to the axis o" the gear, an arm hinging the patch to said axis, a counter- 'weight connected w'ith'the patch and adapted to sci-ve in swinging the patch to open position, and ay fixed cani adapted to engage the patch when in 'open position and force it to closed position while the gear turns, c0m hint-d substantially as set forth. A

G. A gapped gear comprising a gear provided with a gap extending through its rim and inwardly,` a pat-cli adapted to fit and bridge the gap in the rirn, said patch being arranged to swing laterally to the plane of the gear, and n'ieans for swinging the patch into and out oi? the gap.

WILLARD T. SEARS.

Witnesses R.- Harmon lfon'rnn, @nannies W. AiansoN.