US1498020A - Hoist - Google Patents

Description

F. E. DRAKE June 17 19.24.

HOIST Filed Oct. 25, 1922 3 SheeS-Sheet 1 Win/15555 June 17, 1924. Y 1,498,020

F. E. BRAKE HOIST.

1922 3 Sheets-Sheet 2 Patented June 17, 1924.

UNITED :STATES FRANCIS E. BRAKE, O'F DAVENPORT, IOWA.

HoIsT. y

p Application filed October 25, 19122. Serial No. 596,812.

To all whom t may con-ccm.' B e it known that I, FRANCIS E. DRAKE,

. a citizen of the United States, residing at Davenport, in the county of Scott and State of Iowa, have invented certain new and useful Improvements in Hoists, of Awhich the following is a specification. i

The present invention relates to a hoist having for its principal object to improve upon the structure disclosed in Letters Patents No. 1,413,526 issued to me April 18, 1922 and No. 1,426,264 issued to me August 15,v 1922. f

Another important object of they invention is to generally improve` upon hoisting devices of this nature by providing a simple and efficient structure which is reliable in operation and may bemanufactured at a comparatively low cost',`and "be reliable in operation. n

With the foregoing and other objects in view which will appear as the description proceeds, the inventionresides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes inthe precise embodiment of the invention herein disclosedrcan be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawing Figure 1 is a side elevation of the apparatus embodying my improved hoist,

Figure 2 is a top plan thereof,

Figure 3 is a front elevation thereof,

Figure 4 is a detail view taken substantially on the line 4 4 of Fig. 3 looking in the direction of the arrow,

Figure 5 is a section through the lifting bar taken substantially on the line 5-5 of Fig. 4,

Figure 6 is a detail view showing the construction of the double pulley mounted in the base of the apparatus, over which pass the equalizing cables, and f Figure 7 is a detail fragmentary view of plate 28.

Referring to the drawing in detail it will be seen that the base of the apparatus includes a pair of parallel spaced beams 1 terminating in right angular extensions 2 so as to be substantially L-shaped. These two beams 1 are of I construction, and the top portion thereof is continued over `the end of the bottom portion which terminates a slight distance from the end asis illustrated to advantage vin Fig.,1,' whereby the rollers or wheels 3 may be journaled to the ends of the beams 1 and the portion 4 'of the topportions of the beams 1 actas guards for the wheels 3 should thefront end'of the base come into contact with any obstacles. A U-shaped beam 6 is provided at its 'ends with rightangular extensions7 which are i fixed to the intermediate portion` ofiy they beams 1 adjacent the curved extensions`2, and the curved extensions 2 are fixed to the legs of the U-shaped beam 6. vThe angle brackets 8 are used for this purpose. The plates 9 are mounted on the extensions 2 and 7 covering the kspace therebetween and suitable castors 10 are supported by these plates.

y The upright frame of the apparatus isfof y an inverted U-shaped structure. This frame 11 is of I-beam structure and itsends are mounted on the beams 1 adjacent the extensions 7 of the U-shapedbeam 6 and the frame is securely held in place by the "angle brackets 12. A second upright 13 being of an invertedrLQshaped structure has its lower end fixed to the'intermediate portion of the and its other end is fixed tothe intermediate portion of the frame 11 by the angle brackets 15. A lifting bar 16 is constructed so that its ends project in the inner channels of the upright frame 11 and is movable vertically in this frame. The legs of the frame 11 are provided with apertures 17 for receiving bolts 18 slidably mounted on the under surface and ends of the lifting bar 16. Slots 19 are provided in the lifting bar 16 so that the pins 2O on the bolts 18 may project therethrough and the bolts operated easily so as to engage the apertures 17. These bolts are used for locking the liftin bar 16 in any desired vertical adjuste position. f

A pair of lifting arms 23 rest at their intermediate portions on the lifting bars 16 U-shaped beam 6 by the angle brackets 14 mounted therein for engagement with a lurality of apertures provided in the uprightr portion of the member 13, said apertures being seen at 27 in Fig. 3. A plate 28 is provided at its rear end with diverging arms 29 upon which the rear ends of the lii'tinglarms '2 3 are A ulortimed.'k A 'paiiyo'f diverging arms are provided on the' forward end of the plate 28 and are fixed as at 31 to the lifting bar 16;; A pairyof 1links32 are pivoted together by a pin 33 that eX- tends through a longitudinally extending slot 35 in the plate 28 and the other ends of these link are pivoted to the intermediate portions of the arms 23. ThisI structure is llustratedto advantage in Letters Patent No. 1,426,264. j

An etjualizin'g mechanism is now provided for :holding the lifting bar 16 .in 4any vertial adjusted position. A pair of 'pulleys 36 are mounted on the frame l1 atits interme- 'on the central portion or the intermediate portion of ,the 'frame 11, and a Cable '42 passesthereover beingattahed to the lift;- igfbar 1 6 whereby it may b e adjusted Vvertically` as ,desired. I provide a commercial screw vgeared chain block, such as nowv horizontally adjustable, said l'rafme piovided Commonly inusfe, andt'hisvlisoperated by the" pulley 44 over which passes the operating cable 45.

A handle 4G ,is piv oted at 47 to the intermediate portion of the beam 6 so that the :hoist may be moved from place to place as may be desired. Having thus described my invention what l claim is:- l. A hoist oom'p risirg:rr 'a framegprvided with chan-nels, ailiffting `bjar -moyable inf'the framej and having ends :disposed vin the channels thereof, lifting arms 'restin'rl o'ii the b'ark and. horizontally adJustable, means for movingthex ,lifting Ylo'arfor justing the vertieallfyiid means for Aloo l i11g"the ds of "the lifting bar in the ehann'elsofftheframe. ..2 hoist comprises :Lafemeaiifasg bar movable yertioally, intheA framdj ing arms resting on the-'lifting 3/ 'r l Withohannels for `receivirig `the T ends of Lsaid lifting bar7 rollers on thejendsiof. said liftingbar in said channelsfandmeans ffer looking the ends of the lifting` v'bar inthe channeLof the frame.` {j} l 'In testimony whereof I Y"affix my sina'- ture in presence of two Witnesses. xg.; r; f FRANCIS E. DRAKE. lVitnesses Y J GEoRGnD.

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