US1732191A

US1732191A - Canvas-handling mechanism

Info

Publication number: US1732191A
Application number: US179200A
Authority: US
Inventors: Evans Ernest Eugene
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-03-29
Filing date: 1927-03-29
Publication date: 1929-10-15
Anticipated expiration: 1946-10-15

Description

Oct, 15, 1929. E. E. EVANS 1,732,191

CANVAS HANDLING MECHANISM Filed March 29, 1927 2 Sheets-Sheet 1 INVENTOR. [RNESTE EV/WS A TTORNE Y.

'Oct. 15, 1929. E. E. EVANS CANVAS HANDLING MECHANISM Filed March 29, 1927 2 Sheets-Sheet INVENTOR. [ff/V55 T E. fVA/VS BY n ATTORNEY.

$ with my device.

Patented Oct. 15, 1929 UNITED STATES ERNEST EUGENE EVANS, OF RIVERSIDE, CALIFORNIA CANVAS-HANDLING MECHANISM Application filed March 29', 1927. Serial No. 179,200.

This invention relates to mechanisms forv handling tents or tarpaulins.

The general object of this invention is to provide a device for conveying and erecting canvas covers such as are used for covering trees for fumigating purposes.

A specific object of my invention is to provide a device of the class described whereby a plurality of covers may be placed and moved. A further object of my invention is to provide adjustable means for handling tree covers.

Other objects and advantages of this invention will be apparent from the following description taken in connection with the aecom-. panying drawings wherein:

Fig. 1 is a side elevation of a motor truck showing my invention applied thereto.

Fig. 2 is an enlarged plan section of the device taken on line 22 of Fig. 1.

Fig. 3 is an enlarged vertical central section of the device taken on line 33 of Fig. 1. Fig. 4 is an enlarged fragmentary section taken on line H of Fig. 2 showing the auxiliary power connection with the crank shaft of the vehicle motor. i Fig. 5 is an enlarged vertical central section through the rear davit showing the same I turned to an inoperative position.

Fig. 6 is a plan view of the device on a reduced scale showing the device positionedbetween two rows of trees and about to hoist a pair of covers therefrom.

Fig. 7 is a View similar to Fig. 5 showing the device as having transferred a pair of covers from one pair of trees to another.

Fig. 8 is a perspective view of a circular cover which may be employed in connection Fig. 9 is a plan view of a canvas tarpaulin also adapted to be used as a cover. Referring to the drawings by reference characters I have indicated my improved cover handler generally at 10. The device as indicated comprises a truckor vehicle 11 of any desired type to the chassis frame 12 of which I secure a frame 13. The vehicle 11 includes front steering wheels 14 and rear 9 drive wheels 15 which are adapted to be driven through the medium of a propeller shaft 16 and its various accessories by an engine 17. Adjacent each end of the frame 13 I provide a davit 18. These davits are shown as exactly similar in structure and are each adapted to turn about their vehicle center.

As shown in Fig. 5 a single davit 18 comprises a hollow vertical tubular member 19 bent at the top at right angles to form a horizontal arm 20. The member 19 is positioned in a hollow stanchion 21 and adapted to be shifted vertically therein to raise and lower the arm 20. The member 19 is adapted to be retained in various vertical positions by pro viding on the stanchion 21 an enlarged circular boss 22 having therein a set screw 23 adapted to engage any one of a plurality of apertures 24 in the member 19.

' The stanchion 21 is adapted to be supported by a bottom bearing 25 secured to a transverse angle 26 of the frame 13. Adjacent the top of the frame 13 I provide for the stanchion 21 a positioning bearing 27 secured to a transverse channel 28 ofthe frame and intermediate the bearing 25 and the bearing 27 I provide another positioning bearing 29' secured to another transverse angle 30 ofthe frame 13. The stanchion 21 is adapted to turn about its vertical axis in the bearings be turned by racks 33 which engage the gears on opposite sides and are secured to a rod 34. I

The rod 34 may be supported in anydesired manner as by transverse bars 35 and retained in contact with the transverse bars by bridges 36. The rod 34: is adapted to be reciprocated by a disk 38 to which it is con- 'nected by a link 39. Upon rotation of the disk 38 the rod 34 will be reciprocated backward and forward thus causing each of the davits 18 to swing from one side to the other as shown in Fig. 7.

The disk 38 may be supported on a transverse bar 35 and is adapted to be driven from a shaft 41. The shaft 41 is driven through the medium of a clutch mechanism 42 from another shaft 43 which is in turn driven by a worm wheel 44. The clutch 42 may be of any desired type and may be actuated by a pivoted arm 42 having a handle 42 thereon adjacent the vehicle operators compartment (see Fig. 1).

The worm wheel 44 is driven by a worm 45 mounted on a shaft 46 which is "diiven by a bevel gear 47 secured thereto. The bevel gear 47 meshes with another bevel "gear 48 secured to a shaft '49 which is driven from a bevel'gear 50. The bevel gear50 meshes with another bevel gear "51 secured "to a longitudinally extending shaft- 52 which has secured thereto-at its forward end a bevel gear 53v (see Figs. 2 and 4). This bevel gear 53 meshes with another bevel gear 54 secured to a shaft 55. The shaft 55 is adapted to be driven through the 'medium of "a clutch mechanism 56 by a worm wheel 57. The clutch mechanism 56 may beof any desired type and may be actuated by'a pivoted crank arm 56 connected by a rod 56 to a hand lever 56 adjacent the vehicle operators compartment (see Fig. 2). The worm wheel 57 meshes with a worm 58 secured to the shaft 59 of the vehicle engine 17.

I For hoisting the covers I provide a pair of drums '60 and 61 which are adapted to be rotated through the medium of a clutch mechanism 62 by a worm wheel 63. The worm wheel 63 meshes with a. worm 64 secured to the shaft 52. The clutch mechanism.

side of the tubular member 19 of the davits 18 (see Fig.5). The free ends: of the

cables

68 and 69 may be provided with any suitable type of grasping means such as a snap "hook.

75. Adjacent the outer 'end of the horizontal arms 20 of each davit I provide a pulley 76 and adj acent the juncture of the arms 20 and the vertical member 19 I may provide "

guide pulleys

77 and 78. j

In the operation my device 10 is positioned as'shown in Fig. 6 approximately inthe center between four trees indicated atj80, 81,82 and 88. The'covers indicated at 84 and 8.5

.are hoisted up by the

cables

68 and 69 and lowered over the

trees

80 and 81 and then the fumigating operation may take place. After fumigating the

trees

80 and 81 the covers 84 V and 85 are again hoisted by the cables 68 and the time required for fumigating a whole orchard.

In Fig. 8 Ihave (shown and indicated at 87 one type of cover which may be used in con junction with any device for tree fumigation. The cover 87 comprises-a cup shaped fabric body 88 "made of one or more pieces of material. The open end of this cover is preferably adapted to be retained in shape by ahoop 89 secured to the loweredge of the-cover in any desired manner. The hoop 89 is shown as provided with a plurality of rinz'gs 90 to which are secured a plurality of cords 90 The cords 90 pass through rings "96 on a hoop 90 securedi ritermediate the length of'the cover andare connected adjacent the top to a ring 90". With this rigging the cover may be collapsed as-shown in 1 to lessen the length'o'f the cover so that when placing it over a tree the davits 18 will. not have to be raised the full length of the cover above the tree. This construction also allows of a stripping action whenthe cover is being re- 'moved from theitree, the cover being'pulled up from the bottom first.

In Fig. 9 I have shown and indicated at 91 a flat type of cover having a fabric body portion 92. When Rising "this cover for fumigating a tree 'it is merely draped over the tree. To facilitate handling this type of cover I may secure to one edge of the fabric body 92a bar 93provided with'a ring 94 by which the cover may behoisted.

From the foregoing description itwill be apparent that'I have provided anovel cover handling device wh'ich'is simple in construc tion, eas of operation, efli'cient in'use and greatly acilitates the 'handling of the funny gatingcovers or tents.

What I claim'is':

1. A vehicle,'means to drive said vehicle, a davit acent the forward end of said vehicle, another davit'ad'jacent the rea'rend of said vehicle, a windlass, a pair of hoisting cables associated with said windlass and one of said pair of cables associated with said forward clavit and the other ofsaid cables associated with said rear davit, means for turning said davits about their vertical axes simultaneously.

2. A vehicle, means to drive said vehicle, a davit adjacent the forward end of said vehicle, another davit adjacent the rear end of said Vehicle, a Windlass, a pair of hoisting cables associated with said Windlass, one of said pair of cables associated with said forward davit and the other of said cables associated with said rear davit, means for operating said Windlass from said vehicle drive means, a gear on each of said davits, a rod extending longitudinally of said vehicle, racks adjacent each end of said rod engaging said gears on said davits, a disk, a link con necting said rod and said disk, and means for rotating said disk from said vehicle drive means whereby said rod through the medium of said racks and said gears will turn said davits about their vertical axes simultaneously.

3. A Vehicle, means to drive said vehicle, a davit adjacent the forward end of said vehicle, another davit adjacent the rear end of said vehicle, a Windlass, a pair of hoisting cables associated with said Windlass and one of said pair of cables associated with said forward davit and the other of said cables associated with said rear davit, means for operating said Windlass from said vehicle drive means, a gear on each of said davits and means connecting each of said gears and said vehicle drive means for turning said davits about their vertical axes simultaneously.

In testimony whereof, I hereunto aflix my signature.

ERNEST EU GENE EVANS.