US770495A - Trading under the firm-name of crompton - Google Patents

Description

No. 770,495. PATENTED SEPT. 20, 1904. R. OROMPTON & A. J. OREILLY.

SHED FORMING MECHANISM FOR LOOMS.

APPLICATION FILED JAN. 11, 1904.

NO MODEL. 2 SHEETS-$HEET 1.

No. 770,495. PATENTED SEPT. 20, 1904. R. GROMPTON & A. J. OREI LLY. SHED FORMINGMEGHANISM FOR LOOMS.

APPLICATION FILED JAN.11, 1904.

N0 MODEL. 2 SHEETS-SHEET 2 7F8'M ammm ow.

UNITED STATES Patented September 20, 1904.

PATENT OFFICE.

RANDOLPH CROMPTON AND ANTHONY J. OREILLY, OF WORCESTER, MAS- SACHUSETTS, ASSIGNORS TO SAID CROMPTON, GEORGE CROMPTON, EDWARD D. THAYER, AND WILLIAM B. SCOFIELD, OF WORCESTER, MASSACHUSETTS, TRADING UNDER THE FIRM-NAME OF CROMPTON- THAYER LOOM COMPANY, OF WORCESTER, MASSACHUSETTS.

SHED-FORMING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 770,495, dated September 20, 1904.

Application filed January 11, 1904- Serial No, 188,477. (No model.)

To all whom it may concern:

Be it known that we, RANDOLPH CRoMr'roN and ANTHONY J. OREILLY, citizens of the United States, residing at Worcester. county of'VVorcester, State of Massachusetts, have invented an Improvement in Shed-Forming Mechanism for Looms, of which the follow- ,ing description, in connection with the accompanying drawings, is a specification, like char- Io acters on the drawings representing like parts.

This invention has for its object to improve and simplify that class of looms wherein the shed-forming and shuttle-box operating mech anisms derive their movement from continu I 5 ously-rotating partial gears one or the other of which engages a vibrator-gear carried by a vibrator lever, said partial gear turning said vibrator-gear in one or the other direction, as may be required, said loom also havzo ing a pattern-chain shaft that is moved continuously at a variable speed rather than intermittingly or at intervals.

Our invention is illustrated as applied to that class of loom wherein the shed-forming and shuttlebox operating mechanisms derive their movement from continuously-rotating actuating means, shown as partial cylinder-gears, one or the other of which engages a vibrator-gear carried by a vibrator-lever 3 and turns said gear partially in one or the other direction, as may be required, the pattern-chain-carrying shaft of said loombein'g also moved substantially continuously, but at a variable fast and slow speed, as shown in United States Patent No. 495,453, dated April 11, 1893, rather than being driven intermittingly, as had been previously done.

In accordance with our invention the driving-shaft for moving the actuating means of 4 shed forming mechanism, said actuating means being herein illustrated as two partial cylinder-gears, and the driving-shaft for the pattern-chain-carrying shaft are rotated one from the other at a variable speed. As herein illustrated the pattern-chain-driv-in g shaft has imparted to it the variable or fast and slow speed, the difference in speed being due to gears connecting said two shafts, said shafts being represented as parallel. The gear on the driving-shaft for embracing the actuating means referred to is an oval gear, while the gear on the driving-shaft for driving the pattern-chain-carrying shaft is a reentrant circular gear.

Figure l, in end elevation, shows a loom of well-- known construction with the patternchain omitted from the pattern-chain-carrying shaft, we having illustrated our invention applied thereto in one of the best forms now known to us. Fig. 2 is a view of the loom, Fig. 1, looking at the same from the right. Fig. 3 is an enlarged sectional detail of the gears and clutching-hub on the pattern-chaincarrying shaft. Fig. 4 is an enlarged partial section below the dotted line 00, Figs. 1 and 2; Fig. 5, an enlarged view of the pattern-chaincarrying shaft without the pattern-chain, said figure also showing the pattern-chain-driving shaft; Fig. 6, a detail of a guide and its locking device, in which the clutch-rod may be slid. Fig. 7 shows part of the clutch-rod and the guide in section.

The framework A of the loom, the crankshaft A the lower shaft A, driven in any usual manner, the gear A on said shaft and meshing with the pinion A, fast on a short shaft A, having a suitable bearing A, secured to the end of the loom-frame and extended outwardly, where said shaft is provided with a bevel-gear A the bevel-gear B surrounding loosely the lower end of an upright shaft B, constituting what is designated hereinafter as the partial-geardriving shaft, it having usual bevel-gears B B that in turn engage bevel-gears B B fastened, respectively, on

the shafts carrying the lower partial gear B and the upper partial gear B, as well as the shuttle-box controlling partial gears B B commonly employed to actuate the vibratorgears B carried by the usual vibrator-levers a, said vibratorgears being connected with usual levers forming a part of shed-forming mechanism and shuttle-box mechanism, are and may be all as common in looms as at present constructed, and especially in the class of loom referred to in said patent.

The invention to be herein described and claimed relates especially to driving the pattern-chain-carrying shaft (3. This shaft has suitable bearings in the head-motion frame C and is provided at its outer end with a handwheel 0 by which said pattern-chain-carrying shaft may be turned by hand whenever desired, a clutch-hub, to be hereinafter described, occupying at such time its inoperative position. We have omitted the pattern-chain; but it may be of any usual construction and will be carried by the usual hubs 2 2 3 3. The shaft C receives loosely two bevel-gears C 0*, and between the hubs of these gears said shaft is surrounded by a clutch-hub (J splined to said shaft, (see Fig. 3,) said hub having an annular groove that is entered by a forked arm C connected with and forming part of a clutch-moving rod C, that may be slid longitudinally in a guide 0 when it is desired to move the hub referred to that it may engage either one or the other of said loose bevelgears or may occupy a central position between said gears and out of mesh with the clutching-teeth carried by said gears near the shaft C. The rod C has a series of notches, (represented by dotted lines, Fig. 7 ,)either of which may be entered by a dog C acted upon by a spring O attached to the guide (1 by a suitable screw C.

The two bevel-gears C and C are rotated constantly by a conical gear D, that meshes with both said gears, one gear being rotated thereby in one and the other in the opposite direction. The conical gear D is fast on a pattern-chain-driving shaft D and having a connected gear D of the peculiar shape shown in Fig. 4, and We have designated this gear as a rentrant circular gear, such name being chosen for the reason that: the teeth 5 at the ends of said gear are arranged in the arc of a circle, while the teeth 6 at the sides of said gear between its circularly-arranged teeth fall in a sort of concavity in the periphery of the gear. The reentrant circular gear is driven by an oval gear E, fast on the partial-geardriving shaft B, the gear E rotating twice to each rotation of the gear D It will be seen that the shaft B in its rotation at a constant speed will drive the partial gears at a uniform speed; but the oval gear E, meshing with the teeth of the reentrant circular gear D fast on the pattern-chain-driving shaft D, will be rotated at a variable speed or at an alternately slow and then a faster speed, the fast speed being operative while the pointed part of the oval gear is acting on the teeth 6 of the reentrant circular gear, the slow motion being imparted to said pattern-chain-driving shaft while the circular part of the oval gear is in mesh with the circular ends 5 of the reentrant circular gear. Imparting variable speed to the pattern-chain-carrying shaft 0 enables the usual indicators of the usual pattern-chain thereon to be brought slowly into contact with the usual vibrator-levers a common to said patent and to thereafter be moved more rapidly to effect a quick change of position of the'usual vibrator-levers to cause the quick engagement of the teeth of the vibrator-gears carried thereby with the teeth ofthe partial gears.

In practice each vibrator-gear B has a connector a, that is attached to usual elbow-levers a If desired, the rotation of the shaft B may be stopped by turning a lever 6, connected with a link 6, attached to an elbowlever 6 sustained by the loom end, said elbow-lever being connected, through a link If,

with a fork 6 that enters an annular groove in a plate I), fitted on shaft B, thus raising said plate and causing a pin at its under side to be withdrawn from a hole in the hub of the gear B. When the hub is disengaged, the shaft B is freed from the shaft a, and thereafter the movement of the partial gears and pattern-chain shaft may be reversed or turned backward by hand through the handwheel M, carried by, as shown, the upper partial gear, such movement of the partial gears reopening the shed, and if at the same time the clutch-hub is moved on the patternchain-carrying shaft to engage the opposite bevel-gear then the pattern -chain-carrying shaft will also be reversed. When the gear B is disengaged from the shaft B and the partial gears are at rest, the hub C of the clutch may be put into its central position and the pattern-chain-carrying shaft may then be moved in either direction, leaving the pattern-chain-driving shaft at rest.

The vibrator-levers will have coacting with their ends usual locking means for holding said levers in place while the vibrator-gears are being moved in the formation of sheds.

Believing ourselves to be the first in loom construction to rotate the pattern-surface-carrying shaft and its driving-shaft at a variable or fast and slow speed from a continuouslyrotating shaft parallel to said driving-shaft and intermediate gears, said latter shaft be ing used for moving the actuating means for the shed-forming mechanism, it is not our intention to limit our invention to the particular form of pattern surface or chain nor to the exact devices illustrated foractuating the shed-forming means.

Having described our invention, what we claim, and desire to secure by Letters Patent, 1s

1. In a loom, partial gears for actuatingthe shed-forming mechanism, a continuously-rotatable driving-shaft, and gearing intermediate said shaft and said partial gears to rotate the same, a pattern-surface-carrying shaft, a driving-shaft therefor,and intermeshing gearing carried by both said driving-shafts and adapted to rotate said driving-shaft for driving'the pattern-surface at a variable or fast and slow'speed with relation to the' drivingshaft for the shed-forming mechanism, and gearing intermediate said pattern surfacecarrying shaft and its driving-shaft whereby said pattern-surface-carrying shaft may be turned either forwardly or backwardly at will.

2. In a loom, acontinuously-rotatable driving-shaft for moving the actuating means of shed-forming mechanism, a pattern-surfacecarrying shaft, a driving-shaft therefor occupying a position substantially pagallel to the first-named driving-shaft, and intermeshing gearing carried by both said driving-shafts and adapted to rotate one of said shafts at a variable or fast and slow speed.

3. In a loom, a continuously-rotatable driving-shaft for moving the actuating means for the shed-forming mechanism, a pattern-surface-carrying shaft, a driving-shaft therefor occupying a position substantially parallel to said first-named driving-shaft, and intermeshing gearing carried by said driving-shafts whereby said first-mentioned continuouslyrotatable driving-shaft rotates said secondnamed driving-shaft and the pattern-surfacecarrying shaft at a variable or fast and slow speed.

4. In a loom, a continuously-rotatable driving-shaft having an oval gear, said drivingshaft moving the actuating. means of shedforming mechanism, a pattern-surface-carrying shaft, a driving-shaft therefor having a reentrant circular gear in mesh with the oval gear on said continuously-rotatable drivingshaft, whereby the last-named shaft is made to turn the pattern-surface-carryingshaft and its driving-shaft at a variable or fast and slow speed.

5. In a loom, a pattern-chain-carrying shaft, gears loose thereon, a pattern-chain-driving shaft having a rentrant circular gear and a gear meshing with and to rotate said loose gears in opposite directions, a clutch hub splined to said pattern-chain-carrying shaft between said loose gears, means to cause said hub to engage one or the other of said loose gears to rotate said pattern-chain-carrying shaft in one or the other direction, a shaft parallel to the patternchain-driving shaft and having an oval gear meshing with a reentrant circular gear carried directly by the driving-shaft for said patternsurface-carrying shaft, whereby one of said driving-shafts revolved at a uniform speed will rotate the other of said driving-shafts at a variable speed, substantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

RANDOLPH CROMPTON. ANTHONY J. OREILLY.

Witnesses:

CHARLES F. ALDRICH, GEORGE GooDLINE.

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