US807164A - Hoisting device. - Google Patents

Description

PATENTED DEC. 12, 1905.

P. A. GOULD & G..R. WATSON.

HOISTING DEVICE.

APPLICATION FILED JUNE 8,1905.

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PERLEY A. GOULD AND GEORGE E. WATSON, OF SARANAC LAKE, NEW

YORK; SAID WATSON ASSIGNOR TO SAID GOULD.

HOISTING DEVICE.

Specification of Letters Patent.

Patented Dec. 12, 1905.

Application filed June 8, 1905- Serial No. 264,272-

To all whom it may concern:

Be it known that we, PERLEY A. GOULD and GEORGE R. WATsoN, citizens of the United States, and residents of Saranac Lake, in the county of Franklin and State of New York, have invented a new and Improved Hoisting Device, of which the following is a full, clear, and exact'description.

This invention relates to a device for facilitatin the raising of heavy wei hts. It is especia ly useful in lifting transformers to attach them to electric-light poles.

The object of the invention is to produce a device of the class described which is simple in construction and which may be readily set up temporarily upon an electric-light pole for the purpose suggested.

A further object isto so construct the device that it readily adapts itself to the construction work at the top of an electric-light pole, enabling the device to bereadily applied to poles of different kinds or having cross-arms difierently arranged.

The invention consists in the construction and combination of parts to be more fully described hereinafter and definitely set forth in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which simlar reference characters designate similar parts in all the views.

Figure 1 is apers ective showing theupper end of a pole to which our device is represented as applied. The illustration shows the transformer in the act of being lifted into position. Fig. 2 is a vertical section taken at right angles to the cross-arms and illustrating a modified form of the device, which is used under certain circumstances; and Fig. 3 is a plan showing in detail a clamp which constitutes a feature of the invention.

Referring more particularly to the parts, and especially to Flg. 1, 1 represents the up per extremity of an electric-light pole, having a cross-arm 2 of common form attached thereto as shown. The lifting device comprises an A-frame 3, having oppositely-disposed converging legs 4, connected by transverse cross-bars 5. These legs at their lower extremities are formed into feet 5, having downwardly-turned toes 6, which are adapted to engage the sides of the cross-arm 2, as indicated. Between the upper extremities of the legs 4 a beam 7 is rigidly attached,

the said beam projecting at the front to form a head 8, and this head is formed with an eye 9 to facilitate the attachment of a block and tackle 10. The rear extremity of the beam 7 is supported upon and rigidly attached to a stanchion 11, which is dis osed in a vertical position, as shown. Whi e the body of the stanchion 11 is of round form, as shown, its lower extremity is drawn out to a fiat form, as shown, and this flattened portion is bent outwardly so as to form a bracket 12, said bracket presenting horizontal extensions 13 and a vertical extension 14. The bracket 12 terminates below in avertical extension or foot 15, which is adapted to be rigidly attached to the side of the pole by suitable fastening devices 16, as indicated in Fig. 1. Another fastening. device 17 is preferably applied to the upper portion of the bracket and at the foot or flattened portion of the stanchion. Upon the side of the stanchion 11 which is remote from the pole a brace or tie-bar 18 is arranged. This brace is attached integrally to the upper extremity of the stanchion-and inclines downwardly and outwardly therefrom, the lower extremity of the said tie-bar terminating in an eye 19, near which the same is braced by a transverse bar or stud 20, which is formed, preferably, integrally with the stanchion and brace, as will be readily understood. In the eye 19 a turnbuckle 21 is attached, the lower extremity whereof engages the threaded extremity of an anchorbolt 22. This bolt 22 has a substantially vertical shank and a bent lower extremity 23,

said lower extremity being formed with an eye 24, which is received over an anchorhook 25, said anchor-hook being rigidly attached to said foot 15. From this arrangement evidently the tensile strains in the stanchion and the brace may be readily taken up. i

In order to increase the rigidity of the upper portion of the structure, we provide braces 26, consisting of flat bars, the forward extremities of which attach to the legs 4 of the A-frame and the upper extremities of which attach to the beam 7 near the rear end thereof. This form of the device is applied in practice, as indicated in Fig. 1, the foot 5" resting upon the cross-arm 2. It should be understood that this form of the device is intended for raising a transformer to a substantially central position on the cross-arm.

The transformer 27 is preferably supported with a suitable sling 28 from the tackle and is raised in the usual manner by means of a cable 29, leading from the tackle. The transformer is provided with hangers 30, formed with hooks 31 at their upper extremities, the said hooks being adapted to en age the upper face of the cross-arm, as will be readily understood.

It should be understood that after the transformer is raised and secured in position the lifting device will be removed and lowered to the ground.

The object in forming the bracket 12 at the foot of the stanchion 11 is to adapt the device to be used on poles which have crossarms disposed on opposite sides thereof. It will be seen that the bracket presents an opening or recess to receive the cross-arm which would lie opposite to the cross-arm expected to support the transformer.

Where the device is to be used to raise the transformer to a point on the cross arm which is not central, but removed from the pole, we construct the device as illustrated in Fig. 2. In this instance the A-frame 32 of the device is the same as that described above, and likewise as to the bracket 33 and its contiguous parts at the base of a stanchion 34. The A -frame is formed below with feet 35 also as described above in connection with the frame shown in Fig. 1. We provide, however, an additional bracket 36, which enables the device to be attached to the cross-arms 37 and 38 without any at tachment being made to the pole 39. The body of this bracket 36 consists of a vertically-disposed fiat bar 40, which rests against the inner faces of the cross-arms 37 and 38, as shown. At its upper extremity this bar is bent laterally and extends toward the bracket 33, being provided with a foot 41, which attaches to the bracket by a bolt 42, as indicated. At an intermediate point upon the bar 40 braces 43' and 44 are arranged which attach to the bar and to the inner face of a foot extension 45 of the bracket 33. At a suitable point the bar 40 is provided with a fixed clamp 46, which engages the under face of the cross-arm 37, as shown, said clamp comprising a wing-nut 47, which enables it to be readily secured in position. Near the lower extremity of the bar 40 a clamp 48 is provided, which engages the upper face of the cross-arm 38. The construction of this clamp is clearly shown in Fig. 3. Near its inner extremity it is formed with an opening 49, enabling it to slide upon the bar 40, rendering it adj us'table thereupon, as will be readily understood, by reason of a thumb screw 50. With this arrangement the bar 40 may evidently be rigidly attached to any poll having a pair of cross-arms one above the other on the same side of the pole. The foot extension 41 and the braces 43 and 44 afford means for rigidly attaching the bracket 36 to the bracket 33, and in this way the strains in the stanchion and rear portion of the superstructure are provided for. Attention is called to the form of the bracket 33, which is is similar to that of the bracket 12, described above. Evidently if there were a cross-arm opposite the arm 37 on the pole and at the same height this arm would be received in the bracket and would in no way operate to prevent the device from being set up in position. The bolts 42 and 51, which connect the bracket 36 with the bracket 33, would be removable, so that the same superstructure could be used with either form of the device described.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- 1. A hoisting device, comprising a frame presenting feet adapted to seat upon a horizontal arm, a beam attached to the upper extremity of said frame, a stanchion attached to the said beam and extending substantially vertically downwardly therefrom, means for supporting a weight from the forward extremity of said beam beyond said frame, and means for fixing the lower extremity of said stanchion.

2. In a device of the class described, in combination, an A frame presenting feet adapted to seat upon a horizontal arm, a beam to which the upper extremity of said frame attaches, a stanchion attached to the rear extremity of said beam and having a bracket formed at the lower extremity thereof adapted to be fixed to a support, a tiebar on the side of said stanchion removed from said frame, and means for anchoring said tiebar to said bracket.

3. In a device of the class described, in combination, an A-frame having feet formed at the lower extremity thereof adapted to seat upon a cross-arm, a beam attached to the upper extremity of said A-frame and projecting therebeyond to constitute a support for a block and tackle, a substantially vertically-disposed stanchion supporting the rear extremity of said beam and having a bracket formed at the lower extremity thereof adapted to be fixed to a support, a tiebar attached to the side of said stanchion remote from said A-frame, means for anchoring said tiebar to said bracket, and diagonal braces connecting said A-frame with said beam.

4. A lifting device adapted to be set up upon an electric-light pole and presenting a structure having feet adapted to seat on a cross-arm of the pole, said structure including a bracket offset so as to present a space adapted to receive a cross-arm opposite to said first-named cross-arm.

5. In a device of the class described, in combination, a frame presenting feet adapted to rest upon a horizontal arm, a beam sup- I ported by said frame, a stanchion extending names to this specification in the presence of downwardly from said beam and terminating two subscribing Witnesses.

below in a bracket, and a second bracket at- PERLEY A. GOULD.

tached to said first-named bracket and hav- GEORGE R. WATSON. 5 ing clamps adapted to attach to horizontal Witnesses:

arms. A. K. BoTsFoRD,

In testimony whereof we have signed our MAUDE E. JACKSON.

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