US1024885A - Hoisting apparatus. - Google Patents

Description

L. O. FORMAN.

HOISTING APPARATUS.

APPLICATIONv FILED Anm, 1911,

Patented A131230, 1912.

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LOUIS O. FORMAN, OF SOUTH ORANGE, NEW JERSEY, ASSIGNOR TO GILLIS i(.'EO(':-BIE'G-AN, 0F NEW YORK, N. Y., A FIRM.

HOISTING APPARATUS.

Specication o f Letters Patent.

. latented Apr. 30, 1912.

Application iiied April 8, v1911. Serial No. `619,697.

South Orange, in the county of Essex and- State of New Jersey, have invented a oertain new and useful Improvement in Hoisting Apparatus, of which the following is a specification.

The invention relates more particularly to apparatus for elevating ashes from cellar to street and analogous light hoisting work, and the object of the invention is to provide a simple, cheap, easily operated mechanism for such purpose, capable of being collapsed telescopically when not in use, and which may be easily installed with but little alteration in adapting it. for service in various situations.

The invention consists in certain novel features of construction and arrangement by which the above objects are attained, to be hereinafter described and pointed out in the claims.

The accompanying drawings form a part of this specification and show the invention as it has been carried out in practice.

Figure l is a side elevation showing the hoist with its standard extended above the street level, the sidewalk being shown in section. T he remaining figures are on a larger scale. Fig. 2 is a plan view of the hoisting mechanism at the upper end of the standard. Fig. 3 is a corresponding section of a portion of the same, showing the brake. Fig. 4 is a vertical section, partly in elevation,showing the means employed in mounting the hoisting mechanism upon the standard. Fig. 5 is a plan View, partly in horizontal section, showing the elevating mechanism for raisingor lowering the standard and hoisting mechanism thereon. Fig. 6 is a vertical section through portions of the post and standard, showing the lower end of the elevating rack in elevation. Fig. 7 is a corresponding front View, partly in vertical section.

Similar letters of reference indicate the same parts in all the figures.

A is a hollow post firmly fixed by means of the foot A1 upon the floor or cellar bottom beneath an opening m in the sidewalk M, which is closed when the hoist is not in use, by a cover M1' indicated by dotted lines in Fig. 1. IBraces A2 from the p'ost to adja cent side walls, not shown, aid in supporting the post.

Within the vertical` post is a `tubular standard B fitted to slide telescopically and inclosing a. core B1 on which is a rack B2 with its teeth exposed along a slot b in the standard and presented at a slot a in lthe post for engagement by ak toothed rackwheel C1 mounted 'on a transverse shaftfC supported in a yoke D made in halves and arranged to grasp the cylindrical surface of the post. The yoke is thus firmly clamped in position near the base of the'post by bolts D1 and D2, the latter having a-tubular distance-strut D3 serving to hold the arms D4 of the yoke properly separated. On the overhang end of the shaft C is a spur-gear wheel C2 in mesh with a pinion C3 on a shaft C4 mounted in bosses D"S on the yoke. The end of the shaft C4 opposite to the pinion is extended and squared to receive a crank L by which the shaft may be turned and the standard raised or lowered through the above described train of gearing. A pawl D6 on the yoke, when thrown int-o engagement with the rack-wheel C1 serves to prevent the descent of the standard until released, and a pin A3 thrust through' oppositely placed holes al in tle post supports the standard against accidental descent when completely elevated. The pin is preferably secured to the post by a light chain.

On the upper end of the standard is screwed a coupling B3 which receives a threaded sleeve B* inclosing a downwardly projecting leg of a frame F, having parallel horizontally extending overhung arms F2 F2 arms F2 F2 and carrying a pinion G1 in mesh with a gear-wheel H1 on a shaft H parallel with the shaft G and mounted at the extremities of the overhanging arms. On theprojecting end of the shaft Gr is a squared portion G2 receiving a crank which may be the same crank L above mentioned, or a similar crank L1 as shown.

Adjacent to the gear-wheel H1 and located centrally between the arms F2 is a windingspool H2 on which the hoisting cable J is wound, preferably a light wire rope provided with a hook J1 adapted to engage the bail of an ash-can K or other load to be lifted. A pawl F on the frame is arranged to engage the teeth of the pinion G1 and thus hold the load, and in order to permit the latter to be lowered gently when the pinion is released, a brake-drum GS is mounted on the shaft G, partially encircled by a strap or brake-band N attached at one end to the frame F and at the other to a fiat bar N1, otherwise not connected to the frame, but bent as shown in Fig, 3 to rest upon the upper surface of the frame and act as a lever inA tightening the band about the drum to produce the required friction.

lWhen not in service the standard is allowed to descend into the post sufficiently to permit the pavement opening m to be closed by the cover M1. When the apparatus is to be used, the cover is removed, the

`standard elevated to the required height above the pavement by means of the raclt 132, raclt wheel C1, and connected gearing; when thus extended it may be held by the pawl D, or more reliably when fully elevated, by the insertion of the pin A3 beneath the lower end of the standard. rIhe hoisting gear is then operated to raise or lower the ash-cans or other loads from the -oellar to the pavement or waiting cart, in the obvions manner. A reversal of the operation .returns the apparatus to the space beneath the pavement. The core B1 is of T-section and lits snugly wit-hin the standard B. A rivet B5 extends threugh the standard and a cylindrical boss B6 forming the lower end of the core and holds the rack in place. A notch h1 formed in the boss receives the pin A and engages it reliably. The engagement of the leg F1 in the sleeve B4 permits the hoisting gear to be faced in any direction, and the only alterationsgenerally required in adapting the apparatus for service as a cellar ash-hoist, are in the length or height of the post and standard to conform to the height of the cellar; thc elevating mechanism and hoisting gear remaining the same in nearly all cases.

The apparatus occupies but little space and is easily and quickly conditioned for service. The construction shown permits it to be easily and economically manufactured.

l claim :M

l. 1n a hoisting apparatus, a iiXed tubu- Loeaaea lar post, a tubular standard inclosed in said post and constructed to be raisedor lowered teleseopically therein, a rack in said standard, means for securing the rack to the standard, train of gearing carried by said post and constructed to move said standard by engagement with said rack, said standard having a slot in front of the rack through which said train of gearing projects to engage the rack and means on the support of said train of gearing for engagement with one of said gears for preventing descent of the standard.

2. In a hoisting apparatus, a fixed tubular post, a verticallyslotted tubular standard inclosed by said post and constructed to be raised or lowered therein, a rack inclosed in said standard with its teeth presented to such slot, a train of gearing carried by said post and constructed to engage said rack, a coupling at the upper end of said standard, a sleeve secured in said coupling, a frame, a downwardly projecting leg on said frame received in said sleeve, a plate engaged with the lower end of said sleeve, a screw extending through said plate and into said leg, and a winding-spool and operating mechanism therefor carried on said frame.

3. In a hoisting apparatus, a fixed tubular post, a tubular standard inclosed in said post and carrying a rack, a train of gearing carried by said post and projecting through a slot in said standard t-o engage said rack,

means on the support of said train of gearing for engagement with one of said gears for preventing descent of the standard, and means on the upper end of said standard for raising and lowering a load.

4. 1n a hoisting apparatus, a fixed tubular post having oppositely located holes in the upper portion thereof, a vertically-slotted tubular standard inclosed in said post and constructed to be raised or lowered therein, a rack inclosed in said standard with its teeth presented to such. slot and having a notch in its lower end, a train of gearing carried by said post and constructed to move said standard by engagement with. said rack, a pin adapted to be thrust through said holes in said post and through said notch to support said standard, and means on the upper end of'said standard for raising or rlowering a load.

In testimony that 1 claim the invention above set forth l altix my signature, in pres' ence of two witnesses.

Louis o. sonatas.

lVitnesses:

CHARLES R. SEARLE, JAMES C. PICKARD.

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