US923593A - Crane. - Google Patents

Description

c. G. SPRADO.

'CRANE APrLIoATIoN FILED DEU. '1, 1906.

Patented June 1,1909.

rrlTNEssEs.- 9 v ,lNz/ENTOR j t BY Y e ATTORNEY.

UNTE STATES CARL G. SPRADO, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO ALLIS-CHALMERS COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF NEW JERSEY.

CRANE Patented June 1, 1909.

Serial N0. 346,716.

To all 'whom 'it may concern:

Be it known that I, CARL G. SrRADo, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented a certain new and useful Crane, of which the following is a speciiication.

This invention relates to a crane adapted to handle heavy objects, and while it is capable of use with any form of apparatus where similar functions of operation are desirable, it is specially designed for use in connection with gas engines.

It is frequently desirable to remove the valve casings and valves from gas engines for the purpose of inspecting and cleaning them, and with the larger size of gas engines this operation is a very tedious one, especially when the exhaust valve casings are to be removed, as it is customary to place these casings underneath the cylinder where they can be reached only with difficulty by any ordinary form of apparatus.

The object of this invention is to produce a simple, cheap crane by which these valve casings may be readily handled and by which these valve casing may be removed from their seats for inspection and cleanin and may be returned to their seats in exact y the position which they formerly occupied.

It is also an obj ect of this invention to so arrange the crane that it can be used with the valve casing at either end of the cylinder of a double acting engine, the specific problem to be met being to provide a crane which will retain parallelism between the face of the valve casing and its seat, which object is accomplished by the apparatus illustrated, described and claimed by this specification.

In the drawings which accompany this specification and form` a part thereof and which illustrate an embodiment of this in- .vention and on which the same reference characters are used to indicate the same elements in each of the several figures, Figure 1 represents in elevation the cylinder of a double acting gas engine With the crane in position, all parts not necessary for a clear understanding of this invention being omitted. Fig. 2 is a plan view of said cylinder, being somewhat in the nature of a diagrammatic view in order to show clearly the different positions which may be assumed by the crane.

The numeral 1 represents the cylinder of a double acting gas engine provided at each end with inlet valve casings 3 and 4, and outlet valve casings 5 and 6, the cylinder 1 being shown as supported upon a foundation 7, which foundation provides a pit 8 within which are located the exhaust valve casings 5 and 6, and within which is also located the improved crane 9. Each of the exhaust valve casings 5 and 6 are provided with lugs 10 and 1 1.

The crane consists of an upright 12 rotatably mounted in bearings 13 and 14, said upright having a sleeve 15 vertically movable thereon and also being provided with a screw threaded portion 16, upon which screw threaded portion the nut 17 provided with the operating wheel 18 is adapted to travel, the sleeve 15 preferably resting upon the nut 17 and capable of being moved up and down on the standard thereby.

The numerals 19 and 20 represent two arms secured to the standard 12 by the pins 21 and 22, about which pins said arms are adapted to rotate, the arm 20 being also connected with the sleeve 15 by the strut 23 which is pivotally connected bothL with said sleeve 15 and with said arm 20. The arms 19 and 26 are adapted to be engaged with the lugs 10 and 1l by the pins 24 and 25, the pins 24 and 25 being spaced apart a distance equal to thedistance which separates the pins 21 and 22, so that on any movement of the arms 19 and 20 as the result of movements of the nut 17, the upper face of the exhaust valve casings will remain parallel with their seats on the cylinder 1.

The arm 19 is preferably made adjustable, being composed of the lugs 26 and 27, connected by the bolt 28, which is in screw threaded engagement with them.

The operation of the apparatus is as follows: The crane being connected with the exhaust valve casing 5, as shown by Fig. 1 of the drawings, the fastenings or bolts which secure said casing to the cylinder having been removed, the wheel and nut 18 and 17 are revolved so as to permit the sleeve 15 to lower, which it will do on account of the weight of the valve casing 5, and when the valve casing 5 has been lowered to a suflicient extent, providedit be necessary to lower it at all in order to swing it, it can then be swung around to one side of the cylinder,

as shown by Fig. 2 of the drawings, in which position the easing and its valve can be readily inspected or cleaned.

The location of the upright 12, its supports 13 and 14, and the length of the arms 19 and 20, are such that when said arms are disconnected from the lugs of the valve easing 5, said arms can be swung` around and connected with the lugs of the easing 6, thereby adapting the crane to handle either valve easing.

It might happen with some speeilic cylinder that the length oi the cylinder would be so short as compared with its diameter that it would not be feasible to swing` the valve casing outside et the perpendicular' ol the cylinder side, as shown by F 2; but in any case, no matter what the proportions of the cylinder, the valve casings can be lowered from the cylinder to such an extent by the use of this crane that they may be readily examined, the valves removed therefrom, and the parts cleaned. The drawings submitted with this speci'lication, however, show the preferred practice and arrangement of parts where such an arrangement is feasible, as the valve casing has only to be moved vertically a sutiicient distance to break and make joints, thereby saving both time and labor.

The outer extremity or" the arm 19 may be supported from the arm 2O by a strut or upright so arranged as to preserve the parallelism of said arms.

What l claim is,-

1. The combination in a crane of a support, an upright pivotally movable on the support, a plurality of arms pivotally movable with respect to said support, means connectingl the arms for simultaneous movement thereof, and screw means wholly suph ported by said upright for actuating` one ol' said arms.

2. The combination in a crane ol' an upright and means 'for supporting the same in position, two arms pivoted to said upright in such a manner that their lree ends can move in a vertical plane, one of said arms being composed ol sections adjustable with respect to each other whereby the length of said arm may be adjusted, and means connecting the arms for simultaneous movement thereof, a sleeve movable upon said upright, and supporting means uniting one olA Said arms with said sleeve, and means to vary the position oi' said sleeve upon said upright.

3. rlhe combination in a crane olI an up right and means 'lor supporting the same in position, two arms pivoted to said upright in such a manner that their l'ree ends can move in a vertical plane, one ol said arms being composed of sections adjustable with respect to each other whereby the length el' said arm may be adjusted, and means connecting the arms l'or simultaneous movement thereof, a sleeve movable upon said upright, and supporting` means uniting one ol' said arms with said sleeve, said upright being provided with screw threads, and a nut engaging with the screw threads el said upright to permit the sleeve to be moved up or down.

4. The combination withv a body, el' an upright pivotally movable with respect to said body and iournaled on said body, arms se* cured to said upright, a second body to which said arms are secured, and screw means wholly supported by said upright for raising or lowering said second body.

5. The combination with a body, ol' an upright pivotally movable with respect to and journaled on said body below the saine, a second body, arms secured to said upright and to said second body, and means for raising or lowering said second body, said arms being oiA such length and the upright heilig so mounted with respect to said iirst body that said second body may be swung Vfrom be yond a side ol' said iirst body underneath and raised toward the same or the reverse.

ln testimony whereof, l ailix my signature in the presence oi two witnesses.

CARL G. SPRADO.

Vfitnesses:

G. F. Dn Winn, FRANK E. BENNETT.

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