US1136906A - Elevating transfer-truck. - Google Patents

Description

E. s. TODD & B. T. NOBLE.

ELEVATING TRANSFER TRUCK.

APPLICATION FILED OCT. 13. 1913.

Patented Apr. 20, 1915.

2 SHEETS-SHEET 1.

- THE NORRIS PETERS CO.. PHOTOJJTHQ. WASHINGTON, D. L.

E. S. TODD & B. T. NOBLE.

EL EVATING TRANSFER TRUCK. APPILHCATION man OCT. i3, 1913.

v 1,136,906. Patented A r. 20, 1915.

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THE NORRIS PETERS cO.. PHOTO-LITHQ. WASHINGTON, D. c.

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EDWIN S. TODD AND BOUGHTON T. NOBLE, OF MILLDALE, CONNECTICUT, ASSIGNOR TO GEORGE P. CLARK COMPANY, OF WINDSOR LOOKS, GONNECTIGUT, A CORPORATION OF CONNECTICUT.

ELEVATING TRANSFER-TRUCK.

Specification of Letters Patent.

Patented Apr. 20, 1915.

Application filed flctober 13, 1913. Serial No.'794,873.

To all whom it may concern:

Be it known that we, EDWIN S. TODD and BOUGHTON T. NOBLE, citizens of the United States, residing in Milldale, in the county of Hartford, in the State of Connecticut, have invented certain new and useful Improvements in Elevating Transfer-Trucks, of which the following is a specification.

This invention relates to an elevating truck and more particularly to a two-wheeled elevating truck.

One object of the invention is to provide an apparatus which will be capable of prying the load to be transported ofi of the floor and holding it in elevated position on the truck during its transportation.

Other objects will appear in'the detailed description and annexed claims.

The invention will be described in one embodiment thereof for the purposes of illustrating its preferred form. I Y

In the accompanying drawings: Figure 1 is a side view of the elevating truck in one of its elevating positions, showing the platform which is designed to carry the load, partially elevated. Fig. 2 is a side view of the truck prior to the first elevating operation. Fig. 3 is a plan View of the assembled truck. Fig. 4 is a partial sectional view showing the details of the elevating mechanism in one position. Fig. 5 is asimilar view showing the parts in another position. Fig. 6 is a plan view showing the method of locking the elevating means. v

The truck comprises a rectangular body portion or frame 6 having attached thereto the handles a, all mounted on and carried by the wheels on aXle c. In the forward cross member of the frame, elevating mechanism such as shown in Figs. 4, 5 and 6 is mounted. This mechanism comprises two elevating rods e which pass through suitable openings in the cross bar f of the frame, and slide freely therein. The upper ends .of these rods have attached thereto a transverse supporting angle plate cl, as shown shown dotted in Fig. 2, to

upwardly so that the slots m therein are in line with the plates 9 these plates 9 can then bemoved to engage the slots m. The rounded edge of the slot at will enter under the upper shoulder of the slot m to latch the rods 6 in an elevated position if the plates 9 are moved to the right (see Fig. 6). In order to move the plates gfas desired, they are connected by a cross piece 9 ('seeFig. 3). Mounted on the cross bar Z, connected to the two sides or handles a, there is a loose sleeve 2' having fastened thereto a handle arm extending to a point just above the cross rod m" of the handles a. This sleeve 71 has fastened thereto a downwardly extending arm, the lower-end of which are attached links it which extend one to one end and one to the other end of the connecting rod 9. By thisconstruction it will be seen that if the handle arm 70 is moved upwardly, referring to Fig. 3, the plates 9 will be moved to the left to allow the free movement of rods 6 while if the handle arm 70 is moved downwardly the plates 9 will be moved to the right if slots 1% of rods 6 are in line with plates 9 for the latching operation.

The operation of the truck just described in detail is as follows: Referring to Fig. 2, A platform, shown dotted, is designed to support and constitute a part of the load which is to be moved by the truck. The operator having hold of the handles a, swings the truck frame under the platform to the position indicated in Fig. 2, with the elevating rods a lowered, as shown in this figure. From this position, the operator lowers thehandles a to the line indicated by AA. The truck is then swung to the position shown in Fig. l'by lowering the handles to the position indicated by line AA in Fig. 2, and the rear end of the truck frame will pry the platform ofi' the floor during this swinging movement. This prying action is due to the fact that the truck frame is pivoted on the axle 0. Thus $1 9 lllck acts as a Simple lever in applying lifting force to the rear end of the platform.

The front end of the platform pivots on the floor so that the actual lifting leverage applied to the load is a compound leverages Duringfthis downward movement of the handles it will be seen that the elevating rods 6, the lower ends of which engage the floor, swing slightly to the-left (as viewed in Figs. 1 and 2) but the angle plate (Z, which is under the front end of the platform, does not materially change in elevation from the fioor., "With thetruck in the position shown in Fig. 1, the slots m of the elevating rods care in line withthe plates 9 so that if the handle member is is pushed downwardly the plate 9 will move to the right to latch the elevating rods 6 in the position shown in Figs. 1 and 5. If desired a spring may beprovided to turn the sleevez' to throw the plates gr in-latching position automatically. If the truck handles are then elevated to a'line indicated by B,B,

Fig. 2, or any position intermediate line AA and C-C both ends of the platformcarrying thefload, will be raised from the floor. Thelifting of the handles to the last mentioned position will raise the front end of the platform because it is supported by.

the angle plate d. Therear end of the platform which was raised in the first lowering of the handlesis not returned to its lowermost position when the handles are kept on the line BB, or the intermediate position mentioned during the transfer of the platform. When the platform has been moved to a desired point, the handles a may be v raised to the position shown in Fig. 2 and the handle arm k pulled upwardly to move the plates 9 to the left. This action allows the load 'onthe platform to push the rods 6 and the rear end of the frame b downwardly, thereby raising the handles a to the position CC shown in Fig. 2. The parts then occupy the relative positions shown in Figs. 2 and 4. When the platform is thus lowered to the floor, the truck may be removed and used again as desired. Instead of providing slot m in rod e, the lower end of each rod may be turned down in which case a shoulder will be provided to rest on plate 9 in the elevated and latched position of the rods 6. Less accurate fitting of the parts will then be necessary than is'the case when slot m is formed as shown in the drawings.

While we have described one preferred form of our invention, we wish it to be unthe frame intermediate its ends, a load supporting mechanism verticallyslidable relatively to the frame located between the pivoting means and the handle.

2. A transfer truck comprising a frame provided with a handle, means for pivoting the frame intermediate its ends, a load supporting mechanism vertically slidable relatively to the frame located near one, end

thereof, together with locking means for said mechanism.

3; A transfer truck, comprisinga frame provided with a handle, means for pivoting the frame intermediate its; ends, a sup- .porting mechanism movable 'relatively to the frame, a part of said mechanism being arranged to engage the floor as the. handle of the frame is lowered, means to, lock the frame and mechanism in the relative posi-' tion taken when the handle is lowered, all

constructed and arranged so that the load is supported at one end by said frame and r at the other end byanism. V

4. A transfer truckcomprising a frame said supporting mechprovided with a handle, wheels for support 7 ing the frame,'an axle for the wheels, pivottruck frame pivoted intermediate its ends,

supported on wheels and adapted to be :in-

serted adjacent the underside ofthe platform, a vertically movablesupporting means in the frame'nea'r the handle end thereof,

the upper end of which is designed to'en gage the under sideof the platform, the lower endofwhich is designed to engage the floor, together with a device to lock said means in elevated position, all constructed and arranged so that when Y the-handle is.

lowered one end of the truck frame raises one end of the platform which pivots on its other end and said supportingmeans bears on the under side of the platform so that when the supporting means is locked andv the handle raised, the platform will be supported and lifted from the floor 6. The combination ofa truck frame, having a handle and provided with two wheels intermediate its ends, the frame being mounted to rock fore and aft, an elevating mechanism mounted at one end of the frame,

7 together with a platform mounted on vertical standards, all constructed and arranged so that the truck frame, may be placed adjacent the under side of theplatform and the latter raised by a fore and aft rocking movement of the-fra e 7. A. transfer truck, comprising a frame provided with a handle and wheels, said frame pivoted intermediate its ends, a movable elevating device mounted near the handle end of the frame having a member to engage the floor when the handle is lowered and cause relative movement between said device and said frame, together with a latch to engage the elevating device and raise it with the frame when the handle is raised.

8. A transfer truck, comprising a frame pivoted intermediate its ends and provided with a handle to rock the frame and wheels, a vertically movable elevating device mounted in the frame, a part of which is adapted V to engage the floor and cause relative movedevice when the frame is rocked in the other direction, whereby the elevating device and frame move together.

EDWIN S. TODD. BOUGHTON T. NOBLE.

Witnesses:

HERBERT L0Tz, MAXWELL W. NOBLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G.

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