US2196499A

US2196499A - Device to aid in hanging transformers on crossbars

Info

Publication number: US2196499A
Application number: US310392A
Authority: US
Inventors: George E Johnson
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-12-21
Filing date: 1939-12-21
Publication date: 1940-04-09
Anticipated expiration: 1957-04-09

Description

April 9, 1940.

DEVICE IO AID IN HANGING TRANSFORMERS 0N CROSSBARS Filed Dec. 21, 1939 Invenkan G: E. ohnson. ww

G. E. JOHNSN 2,196,499

Patented Apr. 9, 1940 re -Claims (01. 294- 1 'My inventionrelates to. a device toaid in hanging transformers on crossbars and has for its object to provide a device whereby when transformers are lifted to be hung on a crossbar the transformer and its hooks will be moved outwardly so the hooks will pass the crossbar and then can swing in above the crossbar whereupon the device may be removed and'the hooks lowered upon the crossbar for hanging the transformer. i M 1 K As is well known,transformers are quite heavy and are used in large numbers in electrical transmission systems. 1These transformers are supported upon crossbars attached to a pole or poles.

In lifting the transformer into position the tackle is attached by any suitable meansjto the pole above the crossbar for supporting the transformer. As the transformer'is hoisted it tends to.

swing under the crossbar; particularly the hooks; It requires the'utmost elfort of two and some: times more men to push out the heavytransformer so, that the hooks will pass the crossbars.

It is an object of my invention to provide a means removably'attached to the hooks which 1 Will cause the transformers and its attached hooks to move outwardly so as to pass the hooks'above the crossbar, this being accomplished ,as the transformer is being hoisted, 1' I It is a further object'of'my invention to pro vide a device to be attached directly to the transformer hanger hooks and. to overlie them and which maybe readily withdrawn above the hooks, which shall include an angularly disposed skid member positioned to engage the edge of the crossbar as the transformer and its hooks is being hoisted. This skid member will then operate to cause the transformer and its hook or hooks to be pushed outwardly so that the hooks may'fiop back and overlie the crossbar when the transformer and its hooks have been elevated to a point to. bring the hooks beyond the crossbar.

The attached device may then be removed from the hooks and the transformer lowered into position so that the hooks will engage it.

It is a further "object of my invention to provide in connection with the device overlying the hanger hook, a swinging skid plate which will normally hang down leavingthe open side of the box-like structure free to be applied to the hanger hook. When it is desired to lower the transformer the same may be hoisted above the crossbar and the device applied to the hook and the swinging skid be pushed in against the shank of the hanger hook where it will engage the edge Said pin, as shown in Fig. 1, comes under hook of the crossbar and-cause the transformer to move outwardly to pass the crossbar.

' The full objects and advantages of my inv'en tion will'appear in connection with the description hereinafter givenand the novel features by which are obtained'the'highly advantageous results from using'it, are particularly pointed out in the appended clair'ns', it being understood that the embodiment shown is representativeanddoes not 1min the'inventionhv rithin the scope of the claims. 3 i i In the drawingillustrating an application of my invention in one form: t

' Fig; 1" shows a line 'pole with cros'sbars on it anda transformer being hoisted and having my appliance connected'with the transformer hooks,

Fig. 2 illustrates theposition of the parts after the hooks have passed the crossbar, 1

Fig. 3 is a perspectivevieiv of my device,"

Fig; 4 is-a sectional'vi'ew taken across the device in position on one of the transformerhooks.

As illustrated, a line 'pol'e All-is provided with crossb'ars I l andhlZ-which may be. connected to a single pole or extended between two of said poles according to common practice. A transformer l3 isp-rovidedwith asupporting hook l4 securedto the transformer by means of 'a'lshank I5. Tackle lfiof usual construction issecured to thetransformer, as indicated at ll, in any usual way, and is secured to anupper portion of amannersuch as indicated at the pole H! in The transformer hook M, as clearly shown in Fig. 2, comprises a substantially rectangular hook member adapted to liefover the crossbar and hold the transformer firmly in position. Two of such hooks M are commonly applied to a trans'-. former but my device is the same for every hook and will be described in reference to one such transformer hook. w

This device comprises a box-like structure embodying a top wall l9, side wallsZll and 2|, and

end walls

22 and 23, the bottom of the box-like structure being entirely open. The structure thus formed isadapted to'be positioned over the transformer hookancl when so positioned, forms an enclosing cover. Holes M in side walls 20 and 2i are adapted to'receive a pin 25 which for convenience may be suspended by chain 25'.

member I4 and holds the box-like member upon it andalso applies to the crossbar a thrust force as the transformer is hoisted through means now to be described, to the hook member itself.

A plate 26 is secured to the top wall [9 at a PATENT.J O 1E sharp angle, as clearly indicated, and is supported upon the top wall by means of a brace plate 21 extending in a bracing manner between the plate 26 and the otheredge of top wall I9. This plate I have called a skid because it is adapted to engage the lower outside edge of the crossbar as the'transformer and its hooks are elevated, and in sliding along said crossbar edge, has the effect of causing the transformer and its hooks to move or skid outwardly until the entire device passes the edge of the crossbar and swings back over it, as indicated in Fig. 2. The box-like structure is then removed and the transformer lowered whereupon the hooks engage the crossbar and the transformer is hung.

Hinged at 28 to end wall 22. is a plate 29 similar to plate 26. When it is desired to take the transformer from the crossbar and lower it to the ground as frequently happens, the transformer will be lifted so that the hooks are above the crossbar. The plate 29 will then be swung forward against the shank I5 of the transformer hook so that its lower edge 30 will engage the shank !5 of the transformer hook in which position it becomes a skid similar to the skid 26 to engage the upper outside corner of the crossbar and thereby to cause the transformer and the attached hook to be moved outwardly over the crossbar for lowering.

The advantages of my invention will be apparent from the foregoing description. When it is considered that the transformers frequently Weigh in excess of three or four hundred pounds and that the only available point of attachment for hoisting them is the pole itself or one of its crossbars, it will be apparent that this heavy weight must come up with the hooks under the crossbar. To move them out manually so that the transformer hooks may pass the crossbar as required, the utmost exertion on the part of two, and sometimes more than two, men, with hazards to the men in this operation. By the use of my device, this expensive and dangerous operation is entirely avoided. I

I claim:

1. In combination with a transformer and its hanger hook and means for hoisting the same to a supporting crossbar, a device removably supported upon the transformer hook embodying a skid arm engageable with. the crossbar for causing the transformer and its hook to move outwardly so as to pass the crossbar as the transformer is being hoisted.

2. In combination with a transformer and its.

hanger hook and means for hoisting the same to a supporting crossbar, a box-like structure removably supported upon the transformer hook, a pin adapted to extend through side walls'of the box-like structure to engage a portion of the hook, and an angularly disposed skid arm secured to the box-like structure adapted to engage the crossbar as the transformer and its hook are elevated for causing the transformer and hook to move outwardly so as to pass the crossbar as the transformer is being hoisted.

3. In combination with a transformer and its hanger hook and means for hoisting the same from a supporting crossbar, a box-like structure adapted to be applied to the top of the transformer hook after the transformer has been lifted from the crossbar,.and a skid plate hingedly attached to a lower edge of said box-like structure and adapted to be swung inwardly to engage the hook shank with its end, whereby when the transformer is lowered the skid'bar will engage the crossbar and cause the transformer and its hook to move outwardly to pass the crossbar.

4. A skid adapted to be applied to transformer hooks for causing the transformer to-pass the supporting crossbar when the transformer is hoisted, comprising a box open at one sidehaving walls and top adapting the same to fit over the transformer hanger hook and be supported thereby, a skid plate secured to an edge of the top and extending angularly in an upward directiontherefrom, and a brace secured between the other edge of the top and the centralportion of the skid plate.

5. A skid adapted to be applied to transformer hooks for causing the transformer to pass the supporting crossbar when the transformer is lowered therefrom, comprising a box open at one side having walls and .top adapting the same to fit over the transformer hanger hook and be supported thereby, a swinging skid plate hinged to the open edge of a side and extending downwardly therefrom when the box is supported by the hanger hook, said swinging skid plate being adapted to be moved inwardly to engage the shank of the hanger hook and cause the transformer to pass the crossbar when it is being lowered.

GEORGE E. JOHNSON.