US705905A - Elevating roller attachment. - Google Patents

Description

Patented lilly 29, |902. A. H. CENTNER. ELEVATING RLLER ATTACHMENT.

(Appuctmn med nm. 14, 1902.)

('llo Model.)A

2 Sheets-Sheet vI` MJNI No. 705,905. Patented :my 2'9, l|902.

A. H. cammen.

ELEVTING ROLLER ATTACHMENT., (Application med Mar'. 14, 1902.)

www. n an" UNITEDv STATES? PATENT OFFICE.

ALBERT II. CENTNEB., OF CHICAGO, ILLINOIS.

ELEVATING ROLLER ATTACHM ENT.

SPECIFICATION forming part of Letters Patent No. 705,905, dated July 29, 1902. Application led March 14,1902. Serial No. 98,212. (No model.)

To all wir/0777, t may concer-n:

Be it known that I, ALBERT H. CENTNER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illi-` nois, have invented new and useful Improvements in' Elevating Roller Attachments, of which the following is a specification.

This invention relates to an elevating roller attachment of that class designed to conveniently transport .heavy articles, such as domestic machines, heavy household furniture, and store and office furniture or other heavy articles to which ordinary rollers cannot be practically or conveniently applied.

The main object of the present improvement is to provide a simple and effective device capable of being disposed in stable position to receive the article, machine, or other device to be moved or transported thereby and afterward adjustable to bring the rollers into engagement with the surface on which the attachment is resting and disengage the legs of the attachment from such surface.

. the rollers thereof in operative relation inV A further object in view is to provide an elevating roller attachment having simple and readily-operated means for suspending 'such a manner as to resist any tendency to,- 'ward inoperative disposal of the rollers by the weight imposed upon the attachment.

With these and other objects and advantages in view the invention consists in the construction and arrangement of the several parts, which will be more fully described and claimed hereinafter. A In the drawings, Figure 1 is a perspective view of the improved roller attach ment, showing it arranged to bring the rollers in contact with the surface over which the device is to move in full lines and the roller elevated out of operative position in relation to the supportingsurface in dotted lines. Fig. 2 is a top plan view of the improved attachment. Fig. 3 is a transverse vertical section of the same.

Similar numerals of reference are employed to indicate corresponding parts in the several views. v

The numeral 1 designates a series of yuprights, four of the latter being used in the present instance and inwardly converged to-V ward their upper ends, where they are connected to a supporting-bed. The legs are attached to a horizontally-disposed spider 3, which may be of any suitable form and provided with a central web 4, with an aperture therethrough. 'Ihe uprights at a distance slightly below the spider 3 flare or project outwardly to increase the area of the base-rest of the uprights, so as to give the improved device a more stable position in relation to the surface on which it is disposed. Two of the uprights 1 are connected near their lower ends by a bar 5, for a purpose which will be hereinafter set forth', and to the inner edges of the said uprights near their lower ends lev vers 6 are hinged or movably attachedV andr said tongues to compensate for the movement of the levers 6 at an angle when the balls 8 of the feet 7 are thrown out of engagement with the surface on which the attachment is disposed and as clearly shown by dotted lines in Fig. l.

Rising from the center of the table 11 and rigidly attached to the latter is an upright' spindle 14, freely movable through the web 4 of the spider 3 andserving to cause the several levers to be uniformly adj usted,either to throw them out of contact with the surface over which the device is disposed or to bring the balls or rollers 8 into operative engagement with said surface. f.

Secured to the'center of the bar 5 is one end of a treadle 15, the opposite end of the latter being attached, by a flexible connection 16, to a loop 17, depending from the under side of the table 11. Loosely dependingfrom the spider 3 is a locking rod or bar 18, which is adapted to have its lower end brought in contact with the treadlev 15 to hold the table 11 in its lowered position and maintaining the rollers 8 in engagement with the surface on IOO which the device is disposed, and thus resist any tendency of the said rollers to become disengaged from the surface over which the attachment is moved or thrown up, as shown in dotted lines by Fig. 1, by the Weight of the device supported on the bed 2.

In the use and operation of the device one or more of the same is placed under the article or structure to be transported or moved from one place to another, and during the disposal ofthe device to be moved on the bed 2 the lower ends of the uprights are brought into contact with the surface over which the attachment is to be shifted. After the device to be transported is disposed on the bed 2 pressure is exerted on the treadle 15 by the foot of the operator,and the table 11 is brought down to the position shown in full lines, so as to elevate the bed 2 or throw the feet 7 of the levers 6 into such position that the rollers or balls 8 will depend below the lower ends of the uprights 1 and replace the said lower ends of the uprights to support the attachment and the weight imposed thereon. After the levers 6 are brought down into the position shown by Fig. 1 they are locked against accidental displacement from such position by moving the rod 18 until the lower end thereof contacts with the upper surface of Vthe treadle, and thereby the rollers or balls Swill be held in practically projected position. The article of furniture or other device held on the bed 2 will then be free to be rolled or readily mo'ved over the surfaceon which the balls or rollers 8 have bearing. When the article of furniture or device transported' by the improved attachmentis moved to the position or place desired, the rod 18 will be released and the lower ends of the uprights 1 will be again uniformly brought into contact with the surface previously engaged by the balls or rollers S.

. From the foregoing it will be seen that an exceptionally simple, strong, and durable attachment is provided for moving heavy articles, and the expense'ot manufacture of the same is reduced to a minimum in view of the simplicity of the structure. It is proposed to form the improved attachment of any kindof metal and to reinforce the parts whenever found necessary. y

The parts of lthe improved device may be suitably ornamented, painted, or otherwise coated, and to suit various uses changes in the proportions, dimensions, and form may be resorted to without in the least departing from the principle of the invention.

Having thus described the invention, what is claimed as new is- 1. An elevating roller attachment of the class set forth comprising a series of uprights connected to an upper bed, a series of levers thereon, and centrally-located means for op-` erating the levers and throwing the rollers thereof below the lower ends of the said devices.

3. An elevating roller attachment of the class set forth comprising a series of upright supporting devices, levers movably attached to the inner portions of said devices and provided with outer depending feet having rollers thereon, central operating mechanism connected to said levers for throwing the rollers of the latter below the lower ends of the upright supporting devices, and means for locking the saidcentral operating mechanism against movement when the rollers on the levers are depressed.

4. An elevating roller attachment of -the class set forth, comprisingaseries of uprights, levers attached to the innen-lower portions thereof and provided with outer depending feet having rollers thereon, a spider horizontally disposed and connected to the uprights above the plane of the levers, a central table attached at opposite points to the levers and provided with au upwardly-projectingspindle movable through the spider, and a treadle attached to the table for lowering the latter and throwing the rollers on the levers into operative position.

5. Au elevating roller attachment of the.

class set forth, comprising a series of uprights, levers attached to the inner, lower portions thereof and provided with outer depending feet having rollers thereon, a spider horizontally disposed and connected to the uprights above the plane of the levers, a central table attached at opposite points to the levers and provided with an upwardly-projecting spindle movable through they spider, a treadle attached to the table for lowering the latter and throwing the rollers on the levers into operative position, and a locking-rod loosely depending from the spider and adapted to engage the treadle. y

In testimony whereof I affix my signature in presence of two witnesses.

ALBERT H. CENTNER.

Witnesses:

JOHN HEIDRICH, HERMAN CIRvEs.

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