US593588A

US593588A - kinciid

Info

Publication number: US593588A
Authority: US
Current assignee: JVCKenwood Corp
Publication date: 1897-11-16
Anticipated expiration: 1914-11-16

Description

3 Sheets-Sheet 1 (No Model.)

J. W. KINGAID.

CHAIN HOIST.

Patented Novc 16., 1897n (No Model.) l 3 Sheets-Sheet 2.

J. W. KINCAID.

CHAIN HOST.

No. 593,588. Patented NovC 16,1897g 7 "ws 12 14 ,4m

(No Model.) 3 Sheets-Sheet A J. W. KINGAID.

CHAIN HOIST.

Patented Nov. `16,1897,

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UNITED STATESv PATENT OFFICE.

JOSEPH W. KINOAID, OF READING, PENNSYLVANIA, ASSIGNOR TO THE READING CRANE AND HOIST WORKS, OE SAME PLACE.

CHAIN HOIST.

SPECIFICATION forming part of Letters Patent No. 593,588, dated November 16, 1897. Application filed March 24, 1897. Serial No. 629,083. (N model.)

To @ZZ whom it may concern.-

Be it known that 1, JOSEPH W. KINcAID, a citizen of the United States, residing at Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Chain Hoists, of which the following is a specification.

This invention relates to hoisting,V and particularly to a chain hoist; and the object of the invention is to provide a simplified compact portable chain hoist of peculiar and novel construction and arrangement of parts.

A further object of the invention is to provide a chain-hoist driving and brake mechanism which is inclosed or held by a shell or casing of special form and construction.

A further object of the invention is to provide a bearing for the bevel-gear-wheel shaft and for the pinion-shaft in one and the same piece, said piece or bracket being set in the aforesaid shell or casing to hold the brakeshoe of the hoist against displacement.

A still further and the prime object ofthe invention is to provide a hoist with two bevelgears operated by a single pinion meshing with and revolved transversely to said gears and carrying a hand chain-wheel.

The invention consists in the novel construction and arrangement of parts, and resides, essentially, in having a pinion meshing with two bevel-gears, the shaft or spindle of the pinion carrying a hand or operating wheel to revolve the pinion transversely to the revolution of the bevel-gears.

1n the accompanying drawings, forming part of this application, Figure 1 is a side elevation of my improved hoist. Eig. 2 isasection on the line A A, Fig. 1. Fig. 3 is a section on the line B B, Fig. 1. Fig. t is aplan view of the shell or casing with the brakewheel removed. Fig. 5 is a similar view with the brake-wheel and double shaft-bearing bracket in position. Fig. 6 is a detached plan view of the brake-wheel, showing the side opposite that shown in Fig. 5. Fig. 7 is a side view of a modified form of swivel-hook connection and chain-guide partly broken away.

Fig. 8 is a sectional view on the line c c, Fig.

7. Fig. 9 is a modified form of brake-shoe and chain-hanger. Fig. 10 is a perspective view of the pawl.

The othertrunnion of said swivel 5. The casing and cap are held together by set-screws 6. The shell has an inner iiange 7,

'contiguous with the opening or passage S, and

a suitable opening to receive a bearing 9, secured to the periphery of the shell for the transverse shaft .or spindle 10 of the pinion 11, and a series of ribs or lugs 12 to hold the shaft-bracket 13 in position. This bracket 13 consists of three curved arms 14, which radiate from the bearing 15 for the main shaft 16. One of said arms has a bearing 10a formed integral therewith for the said transverse pinion-shaft 10, and the hand-wheel 7a is keyed to the shaft 10 and provided with a suitable hand-chain 9a, the shafts 10 and 16 thus being at right angles or transverse one to the other. The shell 1 also contains the beveled gear-wheel17, which rests flat against the side of the shell and has internal ratchetteeth 18, engaged by a spring-controlled pawl 19 on the brake-wheel 20, hereinafter to be more particularly described. A concaved bevel-gear 21, a companion to the said gear 17, is with the latter loosely mounted upon the shaft 16. The gear 21 has its hub eX- tending through the cap or cover 5 and forms a lift chain-wheel 22. The shaft 16 extends through an arm 23, formed integral with the cap or cover 5, where it is keyed to said arm, with the lift-wheel 22 held revolubly upon the shaft 16 between the said arm and the cap or cover.

Through the arm 23 is placed a set-bolt 24. to hold the chain-separator 25 between the two lugs 26 upon the cap 5, one end of the lift-chain 27 being attached to the sleeve of the chain-separator, through which said bolt extends. The arm 23 has a wing 428 to accommodate a bolt 29, upon which alift-chain guide-wheel 30 is journaled. The brakewheel 2O is loosely mounted upon the shaft 16 and has a V track for a V-shaped brakeshoe 31 and a deep flange 32, covering the ratchetteeth 18. The hub 33 of the wheel 2O rests on the inner hub 34 of the wheel 17 and leaves ample space between the gear 17 and the wheel 2O for the play of the pawl 19. A cavity 35 is formed adjacent to the brake-wheel hub 33 into the body of said wheel 2O for the pivot projection 36 of the pawl 19, and the pawl-stop 37 is formed integral with said hub, partially surrounding the said cavity. A cavity 38 is formed in the hub 33, at right angles to the cavity 35, in which is secured the spring 39, which keeps the pawl in engagement with the ratchetteeth.

The brake-shoe has projections 40 from one of its flanges, between which one of the arms of the bracket extends, which with the fiange 32 prevents the displacement of the brakeshoe link 41. The latter surrounds the brakewheel and has arms 42, which overlap each other at their ends and pass through the flange 7 and opening 8 to the `outside of the shell or Y casing, where they are connected to the liftchain.

The foregoing elements comprise the brake mechanism.

The cap 5 has a raised seat 43 for the handchain guide 44, and the side of the shell has a like seatforalike guide. These guides'are secured to their seats by set-screws 45, and the free ends of the guide stand at each side of the periphery of the hand-wheel. The two beveled gears and the pinion constitute the driving mechanism.

Referring to Figs. 7 and 8, the cap 46 and shell 47 have semicircular projections 48 and 49, respectively, and are clamped together by bolts 50 to form a bearing for the hook 51. In lieu of the chain-guide wheel 30, a shoe 52 is secured rigid with the wing 53 and has a stem 54, to which one end of the lift-chain is secured, the other end of said chain being attached to the swivel 55, so that the said chain ends are more remote from each other, thus avoiding any confusion or interference of the chain ends.

Referring to Fig. 9, akeeper 5G, connected to a hanger 57 by bolts 58, is provided in lieu of the brake-shoe link hereinbefore referred to, said hanger having the swivel 55 suspended therefrom by means of a nut 59 and pin 60.

It is obvious that the back of the casing or shell may be dispensed with, as well as the cap or cover, leaving the periphery of the shell and bearings for the main shaft substantially as represented in order to lessen the weight and decrease the expense of the apparatus.

The operation of the machine is as follows: In hoisting a load or Weight the hand chainwheel 7 a being turned to the right revolves the pinion 11, which turns the beveled gears 17 and 21 in opposite directions, causing the ratchet-teeth 18 to pass over the pawl 19, The lift chain-wheel 22 being integral with the gear 21 is thus turned and carries half the load being lifted. The other half of the load is sustained at all times by the brakewheel 2O through the brake-shoe 31 and its connections to the said lift chain. When the hand-wheel is turned to the left, the pawl will immediately drop into one of the ratchetteeth 18 and lock the brake-wheel and the gears together against separate or independent movement. Then by a continued turn of said hand-wheel to the left the whole of said mechanism thus locked turns to lower the load. Immediately upon stopping the revolution of the hand-wheel the pawl will engage the ratchetteeth, if it is not already so engaged, and hold the load from dropping. It will thus be seen that the load or weight will be automatically held or suspended at any point to which it may be raised.

Other modifications of details may be made in the practical application of my invention Without changing or deviating from the spirit of the same. I therefore do not wish to be understood as limiting myself to any particular size, shape, or form of hoist, nor to the exact construction of the parts thereof, but,

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, isu

1. A brake mechanism for chain hoists comprising a brake-wheel, a pawl pivoted on the side of the wheel, a spring secured in the hub of the wheel to control the pawl, a brake shoe, and means attached to the hoistingchain and engaging the shoe to connect the brake-wheel with the hoist-chain, as set forth.

2. A driving mechanism for chain hoists comprising two bevel gear wheels loosely mounted upon a shaft, a lift chain-wheel carried by one of the bevel-gears, and a transverse pinion adapted to be revolved in mesh with and between the said two Wheels, and a suitable hand-wheel on said transverse shaft, as set forth.

3. A driving mechanism for chain hoists comprising two beveled gears loosely mounted upon a shaft, the hub of one of said gears forming a lift chain-wheel, a transverse shaft adapted to be revolved at right angles to the said gear-shaft, a suit-able hand chain-wheel on said transverse shaft, and a pinion secured to the transverse shaft and meshing with said gears, as set forth.

4. The combination with the driving mechanism, and the shell or casing, of the bracket contained in the shell and having a central shaft-bearing, and a shaft-bearing in the bracket at right angles to the said central shaft-bearing, as set forth.

5. The combination with the driving mechanism, the brake mechanism, shafts upon which both mechanisms are mounted, one of said shafts being transverse to the other, of a shell or casing inclosing the brake mechanism and a portion of the driving mechanism, and a cap or cover containing the other portion of said driving mechanism and having an arm to which the other of said shafts is fixed, as set forth.

IOO

IIO

6.. The combination with the shell or casing, the. shell-cover, a shaft extending centrally through the casing and cover and secured to the latter, a transverse shaft extending from the inside of the casing through its periphery and provided with a hand-wheel, a beveled gear in the casing loosely mounted on the central shaft and having internal ratchetteeth, a beveled gear loose on the same shaft, a lift chain-wheel formed by the hub of one of the said gears and extending through the said cover, the brake-Wheel having its bearing upon the hub of the other of said gears, the springcontrolled pawl pivoted in the brake-wheel and engaging the ratchet-teeth, and the pinion fixed to the transverse shaft intermediate the said two gears, as set forth.

7. The combination with the casing having ribs or lugs on its inner side, two shafts in the casing one at right angles to the other, of the bracket having a bearing for each of the said shafts, and arms engaging the said ribs, as set forth.

8. The combination with a chain hoist, of a casing having a projection, a main shaft, a cover having a like projection, anda hook swiveled to and between the said projections, of an arm integral with the cover and the said cover projection, to which the main shaft of the hoist is secured, a chain-guide and a wing at right angles to and integral with the said arm and adapted to hold the chain-guide, as set forth.

9. The combination with a chain hoist of v the character described, having a casing containing the driving and brake mechanism, a brake-wheel having a ange, and a brakeshoe having projections, of the bracket having an arm extending between the projections to hold the shoe against displacement, and means connected to the hoist-chain and engaging the shoe to give the latter frictional bearing on the brake-wheel, as set forth.

lO. The combination with the fixed shaft, Y

the gears loosely mounted on the shaft, one

In witness whereof I hereunto set my hand in the presence of two witnesses. j

JOSEPH XV. KINCAID.

Witnesses:

HARRY Z. Es'rERLY, F. PIERCE HUMMEL.