US2001034A - Crane and wire rack - Google Patents

Description

' May 14, 1935. MQSHER V 2,001,034

CRANE AND WIRE RACK Original Filed Aug. 19, 1952 v 2 Sheets-Sheet 1 zmm 61y L. E. MOSHER CRANE AND WIRE RACK Original Filed Aug. 19, 1932 2 Sheets-Sheet 2 Patented May 14, 1935 UNITED stares auteur oral-es Application August 19, 1932, Serial .No. 29505 Renewed November 5, 19,34

1 Claim. (Cl. .24 19) My invention relates to a crane and wire rack and I declare the following to be a full, clear, complete, concise and exact description thereof suificient to enable anyone skilled in the art to which it .appertains to make and use the same, reference being had to the accompanying drawings in which like reference characters refer to like parts throughout.

The object of the. invention is to provide a crane that can be removably attached to a telegraph pole, whereby to facilitate the 'hoisting'or lowering of a transformeror materials from and to the ground for the convenience of the workmen.

Moreover, the device also contemplates a temporary cross arm or wire rack for carrying the electric wires while the workman is replacing a transformer or defective crossarm or performing otherconstruction or reconstruction work on the pole or its accessories.

The device is made .in such manner that it can be readily attachedat'any vertical position upon the telegraph pole. "Furthermore, it can be separated into its several component parts and the parts assembled to the polepart-by-partuntil completed.

The object of the invention will be understood by referring to the drawings, in which,

Fig. 1 shows a perspective view of the crane and Wire rack aflixed to a telegraph pole.

Fig. 2 is a detail view enlarged showing a transverse section taken on the line 2-2, of Fig. 1.

Fig. 3 is a perspective view of the bracket employed.

Fig. 4 is a side elevation of the crane mast employed, the parts being broken away.

Referring more particularly to the drawings the device embodies a framework for attachment to a telegraph pole and a crane mast to be supported by said framework. Crane mast I has a collar formed integral intermediate its length at 2 and there-below a reduced part 3 which is conical or tapers slightly towards its lower end. The lowermost end is reduced further at 4 and again at 5, the reduced parts 4 and 5 being cylindrical. Part 3 of crane mast is projected through apertures made in panels IU of brackets I and I2 which are held in spaced relation to one another and in direct alignment as hereinafter described. Reduced part 3 of mast I has a loose bearing in panel I 3 of bracket I2, whereby it is permitted to turn axially therein, whereas part 5 projects beyond the lower surface of panel II] and has an aperture for the disposition of a cotter pin I3 to prevent crane mast I from being drawn upwards out .of its-bearings an-panels illl, 111.

The under edge of shoulder 4 rests on the "upper surface of panel :IzIi of bracket M to :aid :-in supporting :ma-st in vertical :position. Furthermore, the lower edge iof collar .2 rests upon the upper surface of panel I13 of upper bracket Id through which part 3 is projected as statedeaboize, to aid also in supporting mast in vertical position. The framework that is harnessed to pole I5 embodies brackets H and 112 as above stated. They are held in spaced aligned :relation to each other by a connecting strap 1:6. Strap ilfi engages studs l1, l1 formed integral with blocks 1:8, 118 that are in turn made I'int-egral with their respective brackets .II and .12. Cotter .pins :IS are passed through apertures madein cuter ends of studs ll .to holdconnecting strap IS in place.

.lvlast 1| has .Lanupper horizontal arm 23 made integral therewith. Its router .free end supports a clevis12| which is carriedaonabolt 22 projected horizontally :through the-outer :free end :of horizontal-arm2i). angularly disposed 22 formed integral with "mast I and horizontal arm tends to support "the router .free end of horizontal arm 23. A chain :haul 123 :is hooked ;at21| to clevis 2|. The chain haul is used to elevate or lower tools ormaterials-such as;a transformer to or from the workman on the pole. Furthermore, the crane mast I can turn in a horizontal plane in its supports as hereinafter described to allow the chain haul 23 to be used on either side of the cross arm 25 hereinafter described.

The means for supporting crane mast I embodies the brackets and I2 heretofore mentioned. Each of the brackets II and I2 is made alike and comprises a panel member I0 from which project lateral extending integral lugs and 3|. A clevis 32 is bolted at 33 to laterally extending lug 30. A chain 34 has one end fastened to clevis 32. The opposite end of chain 34 engages in a detachable manner hook 35 of adjustable or take up bolt 36. Bolt 36 projects through a loose bearing in laterally extending lug 3|. A nut 31 is mounted to the thread end of bolt 36 on the side of lug 3| opposite that of hook 35. It is turned on bolt 36 to adjust the position of bolt 36 relative to lug 3|, and thereby to determine the amount of tension of chain 34 relative to pole 38.

The means for turning nut 31 contemplates a special wrench 39 which is pivoted to nut 31. To this end wrench 39 is bifurcated at 40, its free ends have sockets or apertures forming loose bearings for the loose reception of pins 4|, 4|

that project from diametrically opposite positions from nut 31. Wrench 39 can be rocked on pins 4|, 4| to dispose handle part 42 in radial relation to nut 31, whereby to be in the most convenient position to act as a crank handle whereby to move nut 31 on bolt 36 and thereby take up any slack in chain 24 about telegraph pole I5.

A burr 46 is secured to one of the links of chain 34 and adapted to engage the surface of pole 45, whereby to aid in holding chain 34 in correct horizontal plane on pole 45.

Moreover each of the brackets II and I2 has integrally formed re-inforcing edge ribs 41 both above and below panel Ill. The innermost end surface of each of the brackets II and I2 has formed therein a ire-entrant angle at 48 to conform somewhat to the outer curved surface of telegraph pole I5 whereby to aid brackets I I and I2 in adhering to pole I5.

The invention also contemplates the use of a cross arm or wire rack 49 hereinabove mentioned. Wire rack 49 has depending from its undersurface, hook members 5! which are suitably spaced from each other along rack 49 for convenience of holding the several electric wires 52, 52 etc. in their relative normal locations with respect to each other.

For this purpose wire rack 49 has formed integral therewith a depending shaft 53 which is located in about the middle of rack 49. Shaft 53 is supported in a rotary manner in brackets 54, 54 formed integral with the upper end of crane mast I. Moreover shaft 53 projects down through loose bearings in upper and lower brackets 54, 54. A collar 55 is made integral with shaft 53 and intermediate its length. The lower surface of collar 55 rests upon the upper contiguous surface of upper bracket 54, whereby to hold shaft 53 in correct elevated position. Furthermore shaft 53 projects through upper and lower brackets 54, 54 as above stated. Its lowermost end is tapped or bored at 56. Internal threads are formed in said bore 55 for the disposition of a headed bolt 51 which holds shaft 53 in position and thereby prevents its being withdrawn upward from its bearings in brackets 54, 54.

The operation of the device is effected by attaching it to a telegraph pole I5 generally near the top thereof. To this end brackets II and I2 may be clamped to pole I5 separately or as tied together by connecting strap I6. In either case chains 34, 34 are passed around the pole I5 and the free end in each instance engaged with its respective hook 35. Wrench 39 is turned on its pivots 4| into radial position and swung around in circumferential manner to turn nut 31 on bolt 35. This action will move bolt 36 with reference to lug 3I, thereby drawing chain tightly about pole I5 and causing also burr 46 to sink into the surface of pole I5 to aid in holding the chain in correct horizontal position. Each of the chains 34 will thus be adjusted.

Mast crane I is then assembled by projecting its lower end 3 through the aligned apertures in brackets II and I2 and inserting cotter pin E3 to part 5 to hold the mast in position. Chain haul 23 is then engaged by inserting hook 24 into clevis 2!.

Wire rack 49 is assembled by projecting depending shaft 53 through the aperture in brackets 54, 54 and engaging headed bolt 5'! in the lower end of shaft 53 to prevent its withdrawal from brackets 54, 54. Wire rack 49 can be turned in the horizontal plane to suit the convenience of the user, when lifting wires 52 from glass knobs 65 onto hook members 5!. Moreover, mast I can be turned also in a horizontal plane to swing horizontal arm 29 at any angle about pole I5 for the convenience of the user in handling objects drawn up or to be lowered by chain haul 23.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is as follows:

In a clamping member, a panel having a reentrant angle, means formed in said panel for supporting a crane, a chain attached to said panel, a bolt, a hook formed on the end of said bolt for engaging said chain, a burr attached to said chain for engaging an object, a nut mounted on said bolt, whereby to hold the same in a predetermined position, a wrench pivotally mounted to said nut, whereby to turn said nut to an adjusted position and reinforcing edge ribs, whereby to strengthen said panel.

LYMAN EDWIN MOSHER.

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