US874105A - Trolley-hoist. - Google Patents

Description

PATENTED DEG. 1'7, 1907.

E: Y. MOORE.

TROLLEY HOIST. APPLmAuoN FAILED FEB; 1. 1907.

2 SHEETSSHEET 1.

PATENTED DEC. 17, 1907.

E. Y. MOORE.

TROLLBY HOIST.

APPLICATION FILED 113.1, 1907.

2 SHEETS-SHEET 2.

INVENTOR.

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UNITED STATES PATENT crime-E.- 1

EDWARD Y. MOORE, OF CLEVELAND, OHIO.

TRoLLEY-HoIs'r.

Specification of Letters Patent.

Patented Dec. 17, 1907.

Application filed February 1. 1907. Serial No. 355,255.

the hoist to the support at any desired point.

The invention is shown herein as especially adapted for hoists having supporting wheels adapted to travel on the lower flange of an I-beam, the locking device operating to engage such lower flange and clamp the hoist thereto.

The invention is hereinafter more fully described and its essential characteristics set .out in the claims.

In the drawings, Figure l is a side elevation of a hoist having my clamping device; Fig. 2 is a vertical section thereof; Fig. 3 is a plan, and Fig. 4 is a fragmentary section in a plane parallel with Fig. 1 and sectioned through the flange of the. I-beam.

Referring to the drawings by reference letters, A represents the I-beam, having the supporting flange a. B is the frame of the hoist, which is made in twoparts bolted together and extends transversely at b beneath the I-beam and upwardly at b b on opposite sides thereof. These sides I) carry supporting wheels O which ride on the flange a.

The hoist frame carries suitable hoisting I mechanism. As shown, there are a pair of lift wheels D mounted on studs E carried by the frame portions 1). These lift wheels have formed on them gear teethadapted to mesh a respectively with pinionsf on a driving shaft F which is supported in lugs b depending from the hoist frame. The hand chain wheel G is suitably mounted on this shaft F and carries a hand chain g. A suitable ratchet wheel H is provided to prevent backward rotation, the pawl cooperating there with being omitted for clearness of illustration.

Extending crosswise of the hoist frame above the portion 6 thereof and beneath the flange a of the I-beam is a rod or bolt J which extends throu h the side members I) and has nuts on its en s. Slidably mounted on this bolt are a pair'of clamping shoes K which have their upper portions adapted to engage the side edges of the I-beam flange a. At their lower ends these shoes have depending pins or lugs is extending into lateral grooves 11 on the under part b of the hoist frame, these grooves being parallel with the rodJ. The shoes are thus guided so that they may move toward or from the flange a.

L represents a plate or disk resting on the beam, and,below the-shoes. The pins is extend through slots Z in this plate. The plate journaled in the frame members and has a projecting operating handle 1 The slots 1 pivot, the shoes are caused to move in or out. These cam slots are so placed that movement of the lever in one direction moves both shoes inward thereby clamping the I-beam, while movement in the other direction moves them both outward to release the I-beam.

It will be seen that I have provided a very simple locking device which takes up no appreciable room, which may be easily set whenever desired, and which then remains in locking position until released. By having the shoes loosely slidable at right angles to the flange of the I-beam, I obtain a very eflicient grip thereon, and one which does not require accurate adjustment to be effective.

I claim:

1. The combination with a hoist adapted to travel on a support, of a pair of clam ing which members carried by said shoes extend.

2. The combination of a hoist frame, a rod carried thereby, a air of clamping shoes slidable on said ro toward or fromeach other, and means for operating said shoes.

3. The combination of a hoist frame, a rod carried thereby, a pair of clamping shoes slidable on said rod toward or from each other, and a cam plate operatively connected with said shoes.

4. The combination with ahoist adapted to travel on an I-beam, of a guide carried by the hoist frame beneath the I-b'eam and transversely thereof, a pair of clamping shoes slidable on said guide toward or from the flange of the I-beam, and means for operating said shoes.

5. The combination With a hoist ada ted to travel on an I-beam, of a rod carrie by shoes carried by the hoist, and an osci at' able plate having eccentric slots through surface I) of the hoist frame beneath the I- v has a central depending boss Z by which it is are curved eccentrically of the pivot of the plate, wherefore, if this plate is swung on its -flan e of the I-beam, and an operating member aving eccentric slots through which extensions from said shoes project.

6. The combination with a hoist frame having members adapted to extend onto opposite sides of a supporting beam and a connecting member beneath such beam, of a pair of clamping shoes reciprocatively guided by such connecting member, a horizontal late oscillatably mounted on the upper si e of such connecting member and having cam surfaces which said shoes engage.

7. The combination of a hoist frame comprising a pair of side members and also con necting portions whereby the frame may lie beneath a supporting beam and extend onto opposite sides thereof, grooves in such connecting portion of the frame, a rod extending across the frame above such grooves, shoes slidably-mounted on such rod and engaging the grooves, and means for causing the shoes to approach each other or recede.

8. The combination of a hoist frame comprising a pair of side members and also connecting portions whereby the frame may lie beneath an I-beam and extend onto opposite sides thereof, grooves in such connecting portion of the frame, a rod extending across the frame above such grooves, shoes adapted to engage the edge of the flange of the I-beams and slidably mounted on such rod and occupying the grooves, and an oscillating plate pivotally supported by such intermediate portion of a frame between the body of the clamping shoes and such grooves, such clamping shoes extending through eccentric slots in the plate into such grooves.

9. The combination of an I-beam, a hoist having supporting wheels riding on the lower flange of the beam, the hoist frame extending beneath the beam, such frame being grooved transversely of such flange, slidably guided shoes occupying such grooves, an oscillatable operating plate carried by the hoist frame beneath the I-beam and having eccentric slots through which portions of the shoes extend in passing into such grooves, and a handle for operating said plate.

10. The combination of an I-beam, of a hoist frame extending onto opposite sides of the I-beam-and beneath the I-beam, supporting wheels carried by the side of the frame and riding on the lower the I-beam, lift wheels carried such side portions ange of b 'portions on their outer sides, a rod extending across the hoist frame beneath'the I-beam and above the intermediate portion of the frame, a horizontal plate pivoted to such in termediate portion and provided with a air of eccentric slots, the intermediate portions of the frame being grooved below such slots transversely of the I-beam, and a pair of clamping shoes slidably mounted-on said rod and having members extending throughsuch slots into said grooves. I

11. The combination, with a supporting I-beam, of a hoist having sup orting wheels adapted to ride on the lower ange of the I- beam, a pair of clamping shoes carried by the hoist and adapted to engage the op osite edges of said lower flange, said shoes being guided to reciprocate toward or from such flange, and mechanism adapted to cause such reciprocation.

12. The combination of a hoist having supporting wheels adapted to travel along a single sup orting member, a pair of clamping shoes a apted to lock such hoist against such single member and slidably guided to reci rocate toward or from the same, and mec anism adapted to cause such reciprocation.

13. The combination with a hoist ada ted to travel along-a support, a guide carrie by the hoist frame beneath such support and transversely thereof, a pair of clamping shoes slidable on said guide, and means for moving said shoes toward or from said support.

In testimony whereof, I'hereunto aflix my signature in the presence of two witnesses. EDWARD Y. MOORE. Witnesses:

ALBERT H. BATES, WINIFRED L.- MQGARRELL.

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