US1407005A - Hoist crane - Google Patents

Description

1. SUMMER.

HOIST CRANE.

1,407,005. APPLICATION FILED JUNE 7. I920- 2 SHEETS-SHEET llllIlIIII J. SOMMER,

HOIST CRANE.

APPLICATION FILED JUNE 7. 1920- Patented Feb. 21, 1922.

2 SHEETS-SHEET 2.

[v y TOR {following is a specification.

UNITED STATES PATENT OFFICE.

JOHN SUMMER, OF PEORIA, ILLINOIS, ASSIGNOR, BY'MESNE ASSIGNMENT S, TO THE UNION TRUST COMPANY, OF CLEVELAND, OHIO, A CORYOR ATION OF OHIO, AND JOHN A. CHAPMAN, OF CHICAGO, ILLINOIS, TRUSTEES.

norsm CRANE.-

IADLOOS. V I

' Application filed June 7,

To aZZ who-m it may concern;

Be 1t known that I, JOHN SOMMER, a citzeirof the United States, residing at Peoria, 111 the county of Peoria and State of Illinois, have invented new and useful Improvements 1n Hoist Cranes, of which the This invention has reference to improvements in hoist cranes. V

The invention has for its principal obgect to improve the mounting for the hoist cylinder, whereby the said cylinder may OSClllate upon its support, so as to relieve it of the severe strains due to the nttmg by the 'llOlSt piston rod, when the carriage on which the cylinder is mounted is moved during the time of lifting.

Theinvention ms for a further object to provide a hoist crane including a hoist carria e. said carria e llflVlllQ' a substantially universally movable mounting for the hoist" cylinder, whereby the said cylinder may oscillate, and thereby relieve the strain on the 'arriage during theinovcment of the latter and the raising of the hoist piston,

That the invention may be more fully understood, reference is had to the accompanying drawings forming a part of the present description, illustrating a preferred embodiment of the invention, in which;

Fig. l is a side elevation of ahoist crane embodying my inventiomparts being broken awayto show the universal mounting for the hoist cylinder and the upper end 01' the said cylinder and hoist piston rod broken away;

Fig. 2 is a plan view of Fig. l, the hoist cylinder and piston rod shown in section; and

Fig. is an enlarged detail partly in sec 'tion showing the universal mounting for the "hoist cylinder, said mounting being os oillated into two diiierent positions to ijllustrate the l leaibility thereof.

Like characters of reference denote corresponding parts throughout the figures.

Hoist cranes of the character herein retcrred to are not uncommon for mill work, especially where it is desired to lift comparatively heavy loads and transfer the same to different points. The present invention in hoists of this character is designed more particularly for use in wire drawing mills, although it may be found tohave general usage.

Specification of Letters Patent; Patented 21. 1922 1920. Serial No. 387,010.

lVhen used in a wire drawing mill the hoist carrlage 1s mounted to travelabove' trucks to be transported to-distant points. 1

The stripping of the drawn hundlesof wire from the drawing blocks a constant physi cal strain upon the workmen, which my invention is intended to, and does, avoid and thereby increasing not only their efficiency, but results in increased tonnage in production.

In cranes of this character, employing a hoist cylinder with ahoist piston operating. therein, the cylinders, so far as I am aware, have had arigid mounting on the hoist carriage, and it follows that with the use of such a structure when-a load is lifted, and during such lifting the carriage is moved, there is considerable"lateral strain placed upon. the cylinder, especially if the load is rather heavy, and this strain is not only in,- jurious to the operatingmechanism, but the movement of the carriage is retarded and V the speed with which the operation may be performed is considerably lessened. lVith my improved carriage and inounting'for the hoist cylinder I overcomefthese objectionable teatines and greatly lacllitate the movement of commodities and with less trouble than heretofore.

I In the drawings 1 designates a truck hav-.

ing wheels 2 which travel on rails 3'1nounted upon any suitable over-head structure'in a null or other place. The truck 1s provided -with rails l on which may travel or be moved the hoist arriage 5, the latter having wheels "G'tor this purpose.

V The base 'of the hoist carriage 5'is eonstruoted of the longitudinal and transversely connected bars 7 and 8. To the 'bars 7 are co1.1nectecl -tl1e upstanding frame supports 9 formed with-plate extensions 10 to serve as bearing members for the axles of the wheels 6 of the carriage. These upstanding the plates 11.

In designates cross bracing sti'aos for connectin and bracin the 0 posite corner supports.

For manually movingthe hoist carriage 5 on the truck 1, and also for moving the truck 1 together with the carriage on the should thus be apparent that an operator by gripping the rod or bar 13 may move the truckl with the carriage 5 thereon to different points along the rails 3 and after locating the truck in proximity tothe load to be lifted. the operator may then move the carriage 5 on the truck to a position to permit the connection of the lifting mechanism with the load to be raised.

The lifting mechanism of the carriage comprises in the main the hoist cylinder 15 and the hoist piston rod 16 therein, thelatter provided with a suitable gripping hook 17, arranged to have connection with the load to be lifted. I am not concerned about the characterof the power employed for extending, or retracting the hoist piston. rod 16,

nor the manner of-control thereof, or from what po nt the same may be controlled, as

such devices are well known in t-heart and in detail form no particular partof this invention. 1 a v v v The mounting for the cylinder 15 com- .prises a strap '18, preferably made in two sections and bolted around the cylinder, the sections of said strap each having trunnions 19 diametrically opposed. These trunnions are adapted to beseated in preferably U- shaped bearings 20 formed on, or secured to the insidejface of ring 21, and said trunnions 19 and bearings 20 provide a pivotal connection betwen the cylinder 15 and the ring 21; To detach the cylinder from the ringit is only necessary to raise the cylinder to lift the trunnionslt) out of bearings 20 as will be understod. i

The ring 21 is formed with hubs or bosses 22 to receive bolts 23, which are also passed through the plates 11 and the bolts secured in position by the nuts 2%. The bolts 23 form the fulcrum points on which the ring 21 is pivotally connectedto the hoist carriage and said bolts 23 are preferably disposed at right-angles to the position of the trunnions 19 when journaled in the ring. 'ihus it will be observed that the ring 21 maybe oscillatod on the hoist carriage through its connection therewith by means of the bolts 23, and the cylinder through the connection of the trunnions 19 with the ring 21 may be oscillated in said ringQ'These two. pivotal connections, the ring with the carriageand the cylinder with the ring provides and approximateuniversal connection between the cylinder and the carriage which will permit of various movements on the carriage, not only for the purpose of permitting a wide range .of locationof the hook 17 on the piston rod 16, but as the load is being lifted and the carriage is being moved the strain upon the cylinder 'and piston, as well as upon the carriage is'removed. i

What I claim is'z A V 1. In an apparatus of the character described, in combination, a wheeled truck including a pair of rails, a hoist carriage, wheels supporting said carriage and movable on said rails, said carriage including an upstanding skeleton frame work, an annular ring provided with diametrically op posed and internally arranged open trunnion bearings, means pivotally connecting saidring, at points at right angles to said hearings to and within said frame work atthe. upper end thereof, and elongated hoisting member disposed inan upright position through the frame work of said carriage and, down between said rails, a two part clamp secured about saidhoistiug member provided with diametrically disposed trunnions adapted to have a removable bearing relation in the bearings of said ring, and a handlebar secured to said framework and depending therefrom and alongside of said truck, for moving the hoisting carriage on said rails and for moving said truckanc carriage.

2. In an'apparatus of the character described, in combination, a hoisting carriage,

including an upstanding skeleton frame work, wheel supports for said carriage journaled at the opposite four corners thereof, a ring located within and at the upper end of said frame work provided with diametrically opposed open U trunnion bearings, pivot pinsfpivotally connecting said ring to said frame work, whereby said ring may be oscillated in one direction, a hoisting 'member disposed in an upright position through said ring and 'saidframe work, clamping members secured to and embracing said hoisting member, trunnions arranged diametarically on said clamping members adapted to have a 1'6ll]OVLblG'(fUl1- nection with said trunnion bearings, whereby said clamping members may be oscillated only in one direction in said ring, and a. handle bar secured to' and depending from said frame work. v

JOHN soMMER}.

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