US1879848A - Portable transformer and hoist - Google Patents

Description

Sept. 27 1932. c, M HORNE 1,879,848

PORTABLE TRANSFORMER AND HOIST Filed July 22, 1930 2 Sheets-Sheet 1 2a FT 0 22 Q Z l0 7 I? H Inventor All 2 omey Patented Sept. 27, 1932 cnnrs'rornna M. Home, or ARLINGTON, MASSACHUSETTS :ZPORTAIBLE TRANSFORMER AND HOI ST Application filed July 22,

This invention relates broadly to hoists, and the primary object of this invention is to provide a portable hoist tofacilitatetheposition of a. transformer on telephone cable 5 wires or posts usually provided for the wires. .A still further object of the invention is to provide a hoist of the above mentioned character, which can be readily carried from place to place, conveniently secured to the 1 cross arm of the telephone post, and further whereby the transformer may be raised into proper position on the cross arms of the post without coming into contact with the telephone cables. 15 Other objects and advantages of the invention will become apparent during a study of the following description, taken in connection with the accompanying drawings, where- 1n:

Figure 1 is a perspective View of the improved hoist, the same being shown in position on a telegraph post for more clearly illustrating the manner of utilizing the same for H raising the transformer to position,

25 Figure 2 is a front elevational View showing the transformer in position,

Figure 8 is a side elevational view of the hoist, certain parts being shown in section.

WVith reference more in detail to the drawings, it will be seen that reference character 5 designates a somewhat conventional type of telegraph post having upper and lower pairs of cross arms 6 and 7 respectively, together with the additional lowermost cross arm 8 which extends at right angles to the upper and lower cross arms 6 and 7. The upper and lower cross arms 6 and 7 as Well as the cross arms 8 have the usual cable wire 9 passed therethrough in the usual manner.

The upper and lower pairs of arms 6 and 7 are braced with respect to the post 5 through the medium of suitable braces 10 and the sin gle arm 8 is braced with respect to the post 5 through the medium of braces 11.

The improved transformer hoist comprises an elongated rod 12 to which are secured at the upper ends thereof upper and lower arms 18 and 14 respectively. The arms 13 and 14: are each swingably secured to the upper end of the rod 12 through the medium of eye bolts 1930. Serial NO. 469,754.

15 arranged in longitudinal alinement. The purpose of the arms will be hereinafter made manifest.

Secured toothelower end of the .rod 12 is an angular shaped bracket 16having an end portion716 extending in spaced parallelism to the post or rod 12 for receiving therebetween one of the lower arms 9 of the telegraph post. Thebracket 16also includes a horizontally disposed portion having a suitable penetrating prong-17 formed inte grally therewith for biting engagement with the said'one arm of the arm 9 when the rod 12 isin position for hoisting thetransformer as will be'hereinafter made manifest.

Adjustable relative to the rod 12- is a second attaching and anchoring bracket which includes a sleeve 18 slidable on, therod 12 and has an L -shaped arm 19 projecting therefroml On the vertical end ofthe arm 19 there is threaded a wing screw 20' the free end of which is pointed-and inwardly from said" free end the shank ofthescrew is suitably provided with auwasher-21. From a study of Figure 1, it will be seen that when the bracket 16 engages the said one of the arms 9 the adjustable bracket engages one of the upper arms 6. and the screw 20 is threaded inwardly so that its pointed end is penetrating the said one'of the upper arms 6 thus securely retaining the rod 12- in position on the telegraph post.

The invention further comprehends a suitable hoisting tackle designated generally by the reference character T. The hoisting tackle T comprises an upper block '22 having a pair of pulleys 23 mounted. therein. "There isalso provided a lower block 24 having a pair of pulleys 25 mounted therein. Trained over the pulleys 23 and 25 is acable 26] one end of which is secured to the upper block 22 as at 27 and the free end of the cable extends downwardly to be trained over a suitable pulley 28 arrangedin a hanger 29 suitably secured to the'lower end of the post 5 by an eye bolt 30. V i 7 The upper block 22 has on the upper end thereof a hook 31 and it is adapted to pass through registering openings 13. and 14L formed in the free ends of the arms 13 and 14. In this connection it will be noted that the free end of the lower arm 14 is bifurcated for receiving in the furcation the free apertured end of the upper arm 13 so that the openings 13 and 14 are brought into registry one with the other and the hook 31 passed through the openings thus securing the, free ends of the arms 13 and 14 in interconnected engagement and at the same time utilizing the arms to provide a swingable support for the hoisting tackle. g The lower block 24 is also equipped with a hook 33 adapted to engage aflexible mem ber 34 such as a cord or the like which is looped and engages lugs 35 on opposite sides of a transformer 36. The transformer 36 is of conventional construction and a detail description thereof is believed unnecessary.

The operation of the device may be briefly explained as follows. To hoist the transformer 36 into proper positionon the telegraph pole, or into that position shown in Figure 2, the rod 12 is supported in a vertical position on the cross arms of the post that is, with the bracket 16 engaging one of the lower pair of cross arms 7, and the retaining bracket that is slidable on the rod 12 engaging one of the upper pairs of the cross arm 6 thus rigidly securing the rod 12 in position. The hook 31 engaging the openings 13' and 14 inthe arms 13 and 14 retains the arms in the angular relation with respect to one another and with respect to the rod 12 as clearly suggested in Figure 1 thus providing a swingable suspension means for the hoisting tackle.

The hook 33 engages the flexible member 34 which is carried by the transformer 36 for securing the transformer to the tackle. Obviously by exerting a pull on the free end of the cable 26 the transformer 36 will be raised in a manner apparent. As the transformer moves upwardly, it will be noted that, as shown in Figure 1, the lower arm 14 is parallel to the cables 9 which will tend to keep the transformer at a proper distance from both the post 5 and cross arm.

lVhen the transformer has been drawn up the proper distance it is then swung into final position by merely exerting a sufficient pull on the cable to turn the arms 13 and 14 to assume the position shown in Figure 2 that is with the lower arm 14 at right angles to the cable 9 after which the tranformer is lowered sufiiciently so that the hooks 37 carried by the transformer engage over one of the upper arms 36 on the post 5 to assume the position shown in Figure 2.

It is thought that from the foregoing description taken in connection with the accompanying drawings, a clear understanding of the operation construction, utility and advantages ofan invention of this character may be had by those skilled in the art without a more detailed description thereof.

Even though I have herein shown and described the preferred embodiment of my invention, it is to be understood that the same is susceptible to changes fully comprehended by the spirit of the invention as herein described, and the scope of the appended claim.

Having thus described my invention, what Iclaim as new is:

In an apparatus of the character described, the combination of a mast, means to attach said mast to a pair of cross-arms arranged one above the other, said mast including a portion to extend a considerable distance above the upper cross-arm, and two arms mounted one above the other on the upper end portion of'said mast to swing both vertically and horizontally with reference to the mast when the mast is in its upright position, said swinging arms having outer end portions constructed to be secured directly to each other, and means carried by said two arms to sup: port a hoist mechanism.

In testimony whereof I affix my signature.

CHRISTOPHER M. HORNE.

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