US2071905A - Toy derrick - Google Patents

Description

Feb. 23,1937.

T. A. SMITH -TOY DERRICK Filed March 50, 1936 4 Sheets-Sheet 2 45mm" 4. Sm 75% T. A. SMITH TOY DERRICK Filed March 30, 1956 4 Sheets-Sheet 3 Invenior 7202 168 A WY. Wm w A ,.M! Y B T. A. SMITH TOY DERRiCK Feb 23', 1937.

Filed March so, 1936 4 sheets-sneak 4;

Za mas 4.

Patented Feb. 23, 1937 TOY DERRICK; 1 Thomas A. Smith, Bradley Beach, N. J.

Application March 30, 1936,

1 Claim.

The present invention relates to new and useful improvements in toy derricks and has for one of its important objects to provide, in a manner as hereinafter set forth, a device of this character embodying a pivotally and rotatably mounted boom, together with novelmeans for manually operating said boom. 7

Another very important object of the invention is to provide a toy of the aforementioned character comprising a novel form of bucket.

Other objects of the invention are to provide a toy derrick which will be comparatively simple in construction, strong, durable, compact, light in weight, instructive as well as amusing, and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views and wherein:-

Figure l is a view in side elevation of a toy derrick constructed in accordance with the present invention.

Figure 2 is a view in front elevation thereof.

Figure 3 is a view in vertical longitudinal section through the main portion of the device.

Figure 4 is a horizontal sectional View, taken substantially on the line i-A of Figure 3.

Figure 5 is a top plan View of a portion of the mechanism for rotating the boom.

Figure 6 is a detail view in perspective of the frame.

Figure '7 is a perspective view of the boom and the bucket.

Referring now to the drawings in detail, it will be seen that the embodiment of the invention which has been illustrated comprises a base i of any suitable material and dimensions, said base having mounted thereon a housing 2. Also mounted on the base I is a frame which is designated generally by the reference numeral 3. As illustrated to advantage in Figure 6 of the drawings, the frame 3 includes a substantially A-shaped member i and a brace 5. Extending between the brace 5 and the cross bar 6 of the member 4 is a strut l. A pulley 8 is mounted on the upper portion of the member t. Mounted on the cross bar 6 of the member 4 is a clevis 9 in which a pulley it is journalled.

'Rotatably mounted on the base i forwardly of the housing 2 is a pulley l l to which one end of a boom i2 is pivotally connected for swinging movement in a vertical plane, as at E3. Jour- Serial No. 71,749

nalled in the housing 2 is a horizontal pulley M on top of which a ring gear i5 is fixed. A suitable belt lfi connects the pulley H to the pulley M for actuation thereby. As best seen in'Figure 5 of the drawings, the belt iii is wrapped around the pulley i and anchored thereto, as at N. Then, the end portions of the belt iii are wrapped around the pulley M and anchored thereto, as at IS. A shaft is is journalled in the housing 2 and terminates, at its outer end, in an operating crank 20. A gear-2l is ing the gear l5.

Also journalled transversely in the housing 2 are shafts 22 and 23 which are provided with operating cranks 2i and 25 respectively. Fixed on the shafts 22 and 23 are reels 2% and 21. The

fixed on the shaft I!) for drivreels 26 and 21 are releasably secured against" retrograde rotation by pawl and ratchet devices 28 at one end of the shafts 22 and 23.

A cable 29 is secured, at one end, to the reel 26 for winding thereon. Cable 29 extends under a guide pulley 3!! in the front of the housing 2, then around the pulley It, then over the pulley 8, around a pulley 35 on the free end portion of the boom l2 and has its other end anchored to the clevis or the like 9. A cable 32 has one end secured to the reel 2'! for winding thereon. The cable 32 passes under a guide pulley 33 in the front of the housing 2, under a pulley 341 of the pivoted end portion of the boom i2, then over a pulley 35 on the free end portion of the. boom l2 and has its other end anchored to said boom, as at 36. Mounted on the cable 32, between the pulley 35 and the anchored end 3% of said cable, is a pulley 31 from which a hook 33 depends.

The reference numeral 39 designates generally a bucket which is suspended from the hook 38 through the medium of a cable 40. The bucket 39 comprises complemental half sections 4! which are mounted for swinging movement on a rod 42. It will be observed that the suspension cable 40 is connected to the rod .2. An operating cable 43 is connected by branches 44 to the outer ends of the pivoted bucket sections M.

It is thought that the operation of the device will be readily apparent from a consideration of the foregoing. To swing or rotate the boom l2, the hand crank is operated for actuating the pulley ll through the gears 2i and iii, the pulley l4 and the belt It. To raise or lower the boom l2 the reel 26 is actuated for winding the cable 29 thereon or for unwinding said cable therefrom. To raise or lower the bucket 39, the reel 21 is actuated to wind or unwind the cable 32.

will be noted that the bucket 39 is of the grab type, the sections or jaws 4| thereof being opened when the bucket is lowered into engagement with the material to be moved.

It is believed that the many advantages of a toy derrick constructed in accordance with the present invention will be readily understood, and although a preferred embodiment of the device is as illustrated and described, it is to be understood that changes in the details of con struction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:-

A toy of the class described comprising a base,

a horizontal pulley rotatably mounted on said base, a boom mounted for swinging movement in a vertical plane on said pulley, a bucket suspended from the free end portion of said boom, another pulley mounted for rotation in a horizontal plane on the base, a drive belt connecting the first named pulley to the second named pulley for actuation thereby, said belt being attached at an intermediate portion to one of the pulleys and attached at its ends to the other pulley, a gear on the upper surface of the second-named pulley, a crank, and a pinion connecting the crank to the gear for operating said second-hand pulley.

THOMAS A. SMITH.

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