US955626A

US955626A - Swinging grinder.

Info

Publication number: US955626A
Application number: US48177809A
Authority: US
Inventors: Marshall F Apgar
Original assignee: Taylor Iron & Steel Co
Current assignee: Taylor Iron & Steel Co
Priority date: 1909-03-06
Filing date: 1909-03-06
Publication date: 1910-04-19
Anticipated expiration: 1927-04-19

Description

M. E'. APGAR.

SWINGING GRINDER.

APPLIOATION FILED 111,111.6, 1909.

Patented Apr. 19, 1910.

2 SHEETS-SHEET l.

M. F. APGAR.

SWINGING GRINDER.

APPLICATION FILED MAR. e, 1909.

Patented Apr. 19, 1910.

2 SHEETS-SHEET 2.

Mli/Mmmm and the motor UNTTED sTATiis PATENT onirica.

MARSHALL F. APGAR, OF HIGH BRIDGE, NEW JERSEY, ASSIGNOR TO TAYLOR IRON @t n STEEL COMPANY, OF HIGH BRIDGE, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SWING-ING GRINDER.

Specification of Letters Patent.

Patented Apr.' 19, 1910.

Appiication med March c, 1909. seiai No. 481,778.

which will enable the grinding wheell thereofI to be swung into any desired position relative' to the work by the operator, whereby it is universally adjustable, and in which also the grinding wheel will be so counterbalanced, either by the driving means therefor or otherwise, that the weight of such grinding wheel will not interfere with the manipulation thereof into any position to which it may be found desirable to quickly swing it.

In the drawings accompanying and forming part of this specification, Figure 1 is a side elevation of this improved swinging grinder, with the perpendicular supporting means partly broken away, and showing in dotted lines one means of counterbalancing the grinder; Fig.v 2 is a top view thereof, with the supporting means shown in section; Fig. 3 is an enlarged partly sectional View of the grinding wheel end of the grinder; Fig. 4 is a detail plan view of the supporting means for the motor; Fig. 5 is a side view of the parts shown in Fig. 4; Fig. 6 is a detail sectional view of the connection between the perpendicular supporting means platform supporting means; Fig. 7 is a view of the yoke looking from left to right in Fig. 6; and Fig. 8 is a view of the overhanging yoke for the depending spindle.

Similar characters of reference indicate corresponding parts throughout thel differ- V ent figures of the drawings.

In the embodiment shown this improved swinginggriiider comprises, in a general Way, a grinding mechanism 2 and a driving mechanism 3 supported relatively` remote one fiom `the other and in such positions with relation 'to each other and 'to their 4 Support that the niotor may be used if deanism, these two mechanisms being carried by a supporting means 4 adapted to be connected to an overhanging support or ceiling, the several parts being so organized that the grinding wheel may have a swinging movement in a vertical plane with the motor, a swinging movement in a'horizontal -plane with the motor, a back-and-forth movement with the motor, and a movement in a circular direction independent of the motor.

In the preferred form shown," the supporting means 4 for the grinderl and motor mechanism may comprise a yoke 5 pivotally attached by means of a pivot rod or pivot G with a hanger 7 adapted for attachment to a ceiling 8 or other overhanging support. By this pivotal connection between the yoke and hanger the yoke and the mechanism carried thereby will have a V.swinging movement relatively to its overliaiiging support. Swiveled iii this yoke is a depending spindle 9 having suitable means, as a collar, for securing it to the yoke. On the lower end of this spindle is loosely mounted a sleeve 10 to projections at the sides of which is bolted a yoke 11 `carrying a pivot rod or spindle 12 for supporting the grinding and motor mechanisms. The sleeve 10 is maintained in position by a pair of

collars

13 and 14, both secured to the spindle 9, the sleeve 10 having a' ange encircling the collar 13 while the collar 14 has a flange encircling the sleeve 10. By this construction the spindle 9 can have a rotary or swivel movement relatively to the sleeve 10. Between the collar 13 and the sleeve, and

within the flange thereof, may be located a f suitable packing'l. The collar '14 is provided with oil inlets 16. By this construction the mechanisms supported by the spind-le can have a swinging movement in a horizontal plane.

The supporting means for the grinding and motor mechanisms comprises a bracket 17 mounted on the pivot 12 of the yoke 11 for swinging movement relatively thereto. This bracket comprises a depending portion 19 having arearwardly extending platform -20 on which the motor is bolted. The bracket also has a forwardly extending tubular portion 21 for the reception of the supporting arm 22 of the grinding wheel. This supporting arm or rod 22 is preferably b ent at its outer end so as to bring the driving wheel 23 of the motor into alinement with the driven wheel 24 of the grinding wheel, these two wheels being connected by a suitable belt 25. The outer end of this' arm 22, whichmay be in the form of a tube if preferred, has loosely mounted thereon a sleeve 26, being secured against endwise play by means or a pair of collars 27 and 28 fastened to the supporting arm 22 with suitable means, as at 29, for insuring a properly lubricated joint. By this means it will be observed thatfthe sleeve is rotatable upon the supporting arm 22. Projecting from each side of the sleeve is a pair of arms 30 forming with such sleeve a yoke for supporting the grinding wheel of the grinding mechanism. Each of these arms-30 terminates at its free end in a bearing member 31, the other half or cap 32 of each of which is carried, by arms 33 secured to a suitable handle or cross bar 34.l By this means it will be .seen that the handle and its arm may be readily detached and thus permit the grinding wheel 36 to be detached` from its supporting arm. j

Secured to the yoke sleeve 26 is a bracket 37 for supporting ashield 38 over the upper portion of the grinding wheel, thereby to protect the operator.

In the improved swinging grinder shown, the operator, on grasping the handles, can swing the grinder backward and forward in substantially a horizontal plane toward and from the work on the pivotal connection 6 with the overhanging support. He can also swing the grinder sidewise or in a horizontal plane'on the swivel connection or sleeve 10. In addition, he can also swing the grinder on the ivotal connection 12 upward or downwar or in a vertical plane, and also adjust or rotate the grinder by means of the swivel connection or sleeve 26 on its supporting arm 22, so that in the present improvement there is provided a universally adjustable grinder, and not only this, but such a grinder that the weight thereof is wholly or partially counterf balanced by the motor, so that this universal adjustment of it is easily obtained.

In those cases where it is undesirable to make the platform supporting the motor of such length that the motor may be used to entirely counterbalance the grinding wheel, a weight may be used in addition to the weight of the motor for accomplishing this purpose. In Fig. 1 the dotted lines illustrate how a weight 41 may be connected by connectin means, such as a rope 40 running over a pu ley 42, with the grinder supporting arm, thereby to maintain the weight of the counterbalancing means when it is desired to have the motor close to the depending supporting spindle..r Of course the weight may be supported in any other manner 1f preferred. In practice the motor may be adjusted upon its supporting platform 17, thereby to adjust the tension of the belt. It will also be observed that the joints between the several connecting members are so designed that they are dust proof. Furthermore, the shield over the grlnding wheel may be made adjustable to permit the use of various` diameters of Wheels.

In practice should it be desired to -do internal grinding, the handle 34, together with the caps thereto attached, may be reversed to bring the handle into position to project toward the motor and thus not interfere with Athe grinding wheel when, as stated, it is de sired to do lnternal grinding.

I claim as my invention:

1. In a machine of the class specified, the combination of swinging supporting means, a-yoke rotatably attached thereto, each end thereof being formed into one member of a bearing, a grinding wheel provided with a shaft supported by said bearings, and

a handle for swinging said rinding Wheel having a pair of ends, said encgisbeing formed into caps for the said bearings.

2'. In a machine of the class specified, the combination of a yoke pivotally secured to an overhanging support, a spindleand sleeve one rotatable relatively to the other and secured to-said yoke, a yoke connected to said sleeve, a motor support pivotallybonnected to said last mentloned yoke and provided with la motor platform below the pivotal connection of said su ort with the yoke, a motor carried by sai support rearwardly of said yoke, a supporting arm carried by said motor support in front of said yoke, a yoke rotatably secured to said supporting arm, a grinding wheel supported by said last mentioned yoke, and driving means connecting the motor with the grindin wheel, the axis of the motor, the pivot o the support and the grinding wheel lying normally in substantially the same plane.

3. In a machine of the class speciied, the combination of depending supporting means, horizontal supporting means pivotally connected to said depending supporting means,

a motor carried by said horizontal supporting meansl at one Side of the depending supporting means, a grinder carried by said horizonta'l supporting meansy atY the other side thereof, and means for adjusting the'posi tions of the grinder and motor relative to the depending supporting means to the end that one may counterbalance the other.

, 4. In a machine of the class specified, the combination of a depending support, a horizontal support pivotally connected thereto, a grinder mounted onthe depending support and a motor also mounted on the horizontal support with a part of the motor below the axis of the motor and located in position for bringing the axis thereofon a plane with that of the grinder and support.

5. In a machine of the class specified, the combination of a depending Support, a member pivotally connected thereto and embodying a horizontal support, a grinder supported by said member, and a motor also supported thereby with a part mounted on the horizontal supportof the motor' below the axis of the pivot, t-he motor being l0- cated at one end side of the depending supportand the grinder at the other side there- 10 of and relatively remotely apart to the end that one will counterbalance the other.

MARSHALL F. APGAR. lVitnesses CHAS. B. ANDREWS, W. M. WILLIAMS.