US3088513A - Pulling device - Google Patents

Description

May 7, 1963 A. MARQUARDT PULLING DEVICE 2 Sheets-Sheet 1 Filed Feb 6. 1961 #rra/PME),

Ma'y 7, 1963 A. MARQUARDT PULLING DEVICE 2 Sheets-Sheet 2 Filed Feb. 6, 1961 I mwa: A04/e4 I NV EN TOR. #mx/0,? MANI/1R07 United States Patent O 3,088,513 PULLING DEVICE Arthur Marquardt, 23121 Liberty, St. Clair Shores, Mich. Filed Feb. 6, 1961, Ser. No. 87,227 13 Claims. (Cl. 153-32) This invention relates to a pulling device, and more particularly to a type of mechanism which may be used in a body bump shop `for vehicles for the purpose of bending and pulling vehicle p-anels into proper shape.

Heretofore, particularly in the body repair business and in garages yfor the repair of vehicle bodies and parts, very often the vehicle .panel involved, such as a door, a quarter panel or deck is so collapsed as a result of a collision as to render substantially diiiicult the matter of generally reforming the part to its normal shape as a part of -a bumping operation, for illustration.

Various efforts have been made to provide devices which would accomplish this, all, to the extent of applicants knowledge, have been completely ineffective for the desired purpose.

It is therefore the primary object of the present invention to provide a novel form of pulling device made of a limited number of parts which is structurally effective for the intende-d purpose.

It is a further object of the present invention to provide a novel pulling device by which the same may be simply and easily and quickly interconnected with a portion of a vehicle panel to be pulled and which is adapted for operation, using an impact power operated wrench or the like, for activating the present pulling device.

Itis a further object of the present invention to provide a novel form of pulling device particularly adapted for bending of vehicle panels which is elfective Without adjustment for pulling in various directions.

These and other objects will be seen lfrom the following specication and claims in conjunction with the appended drawings in which:

FIG. 1 is a side elevational View of the present pulling device.

FIG. 2 is a plan view thereof as a section taken on line 2-2 of FIG. 1.

FIG. 3 is a section taken on line 3-3 of FIG. 1, with portions thereof partially broken away and additionally sectioned, for illustration.

FIG. 4 is `a lfragmentary section taken on line 4--4 of FIG. 3, but on an increased scale.

It will be understood that the above -drawings illustrate merely a preferred embodiment of the invention and that other embodiments are contemplated within the scope of the claims hereinafter set'forth.

Referring to the drawings, the present pulling device includes a rectangular base generally indicated at 11, including the pair of spaced side angle members 12 and the opposed pair of longitudinally spaced end angle members 13, all rigidly interconnected as by the welds 14.

Holddown plates 15 project outwardly from opposite ends from each of the'side angle members 12, being iixedly secured thereto Vfor example, as by the welds 16, bein-g apertured to receive the bolts `17 'anchored Within the floor 18 and projecting thereabove in cooperation with holddown nuts 19, FIG. l.

Mounted on the base y11 adjacent the opposite ends of the end angles 13 are the upright plates 20, which are transversely apertured at their upper ends respectively in order to receive the pins 21 which project from opposite ends of the respective pair of parallel spaced horizontally disposed guide tubes 22, which overlie the side angle members 12, forming a part of base 11, `and accordingly are rotatable about their respective longitudinal axes.

In the preferred embodiment of the invention, and as 3,088,513 Patented May 7, 1963 lCC best illustrated in FIG. 3, the guide tubes 22 are square in cross section and have slidably positioned therein the reinforcing similarly yshaped tubes 23 which merely act Y as stitfeners for the said tubes 22.

A holddown stirrup 24, which is generally arcuate at its upper end loosely overlies central portions of the respective tubes 22 and extends downwardly for cooperative engagement upon opposite sides of the angle plates 12 and respectively secured thereto by the transverse bolts 25 and associated spacer block 25', FIG. 2. The main purpose of the holddown stirrups 24 is -merely to limit flexing movements of the guide tubes 22, which are only anchored to the base at their respective opposite ends as at the swivel points 21. Accordingly the stirrups 24 serve as holddown members but do not interfere with a normal amount of rotation of the tubes 22, about their respective longitudinal axes.

'Tubular support 26 of a shape corresponding to the guide tube 22 is slidably mounted thereover, each tubular support having secured thereto a pair of longitudinally Ispaced upwardly extending holder rods 27, the securing being preferably by welding, or the like, as at 28.

Each of the holder rods 27, intermediate their ends have a peripheral collar 29 of increased dimension and terminate in the upwardly extending pointed end portions 30 forming an integral part thereof, but of a dimension less than the dimension of the holder rods 27.

The extensions 30 of the said holder rods 27 are preferably square in cross section as shown in FIG. 2 and are accordingly adapted to cooperatively receive respectively the lower ends of the parallel spaced upwardly extending bracing tubes 31. These tubes are telescopically mounted over the ends 30 of the holder rods 27 and normally bear against the collars 29, as shown in FIG. 1. The cross -bar 32, xedly interconnects the upper ends of the bracing tubes 31, as by the welds 33.

As shown in FIG. l, removable extensions 31 are provided for each of the bracing tubes 31, which extensions 31' at their lower ends have downwardly depending pointed end portions 32', preferably square in cross section adapted for cooperative telescoping registry with the upper open ends of the bracing tubes 31. The extensions 31 may be omitted, as desired.

The above described bracing tubes 31 are in a substantially upright position, as best illustrated in FIG. 3. The above described bracing tubes 31 may thus be referred to as a first pair of bracing tubes which are telescopically mounted upon the corresponding holder rods 27-30 upon the tubular support 26, shown in FIG. l.

-There is an additional pair of upwardly extending, but normally inclined bracing tubes 35 which Ihave a mounting at their lower ends similar to the mounting above described with respect to bracing tubes 31. For example, there is an additional tubular support 26 mounted upon the second guide tube 22, and slidably adjustable thereover, which support 26 also =has a pair of upwardly extending holder rods 27 terminating in the reduced ends 30 `of square cross section, as best illustrated in FIG. 3, which rods also have intermediate their ends the peripheral collars 29 to cooperatively engage the lower ends of the second pair of bracing tubes 35, telescopically mounted thereover.

The second pair of bracing tubes 35 are inclined towards the substantially upright pair of bracing tubes 31 and are connected thereto by the bolt and nut 37 which engages the rearwardly extending plates 34, suitably anchored to outerside portions of the respective bracing tubes 31 at their upper ends, as best shown in FIGS. l and 3.

A tubular cross head is slidably and adjustably mounted over one of the said pairs of bracing tubes as for example the tubes 31 and may be secured in adjusted position with respect thereto by the fasteners 44. The said cross head includes a pair of substantially upright tubes 38 also of square cross section, which are slidably mounted upon the respective bracing tubes 31.

Tubular bosses 39 project inwardly from the lower ends of the respective members 38 and are xedly secured thereto at 40 and are connected by a cylindrical stud 41 which projects into and between the respective bosses 39, providing a means for loosely connecting the cross head assembly together at its lower end.

Each of the cross head defining tubes 38 on their respective outer sides are slit downwardly as at 42, and transversely at 42 and there projects from the opposite sides of the said tubes 38 at their upper ends a pair of securing ears 43 with a fastening bolt 44 and corresponding nut interposed therebetween to thus apply upon tightening frictional engagement of the said tubes 38 with the respective supporting or bracing tubes 31, to effectively secure the cross head assembly in the desired position of adjustment with respect to the said tubes 31.

The cross head also includes as a part thereof, the rearwardly extending plates 45 which are secured to respectively the upper end inner portions of the tubes 38, as by welding or the like and are transversely apertured to receive the outwardly extending pins 47 on the bearing block 46, which is swivelly mounted between the said plates 45, as shown in fF-IG. 4.

An elongated power rotatable screw 48, headed at its outer end as at r53, is loosely journaled through the bearing block 46 and carries adjacent its headed end a washer 49 secured immovably to the said screw by a pin 50, which washer operatively engages one side of the bearing block 46. A secondary retainer plate 51 is mounted upon the said bearing block 46 and bearing against the outer surface of the washer 49, the said plate 51 being secured to the bearing block by the fasteners 52 to thus immovably anchor the screw 48 against longitudinal movement relative to the bearing block but at the same time permitting free rotation of the said screw 48, as desired.

The pulling mechanism, which forms a further part of the cross head assembly, also includes the nut 54, which is threaded over the end of the screw 48, which said nut is secured Within one end of a tube 55 of square cross section. An eye 56 projects from its other end, with a hook 57 loosely secured to the chain. Guide tube 58 of square cross section is xedly secured at one end to bearing block 46 and guidably receives nut mounting tube 55. Hook 57 is connected to chain 60.

Tubes 55 and 58, and screw 48, as shown in FIGS. 3 and 4 extend from the cross head tubes 38 in a substantially horizontal direction and between the pair of bracing tubes 35.

As shown in FIG. 3, a preferably U-shaped stirrup 62 is provided which receives and has loosely connected thereto the free end of chain 60, as by the transverse pin 61. A suitable swivel 63 is mounted upon the forward portion of stirrup 62 and is connected to the upright pressure plate 64, which has a pair of transverse apertures adjacent its opposite ends.

The L-shaped threaded rods 65 project through plate 64 and are xedly yet adjustably secured thereto by the respective bolts 67, which threadedly engage over corresponding portions of L-shaped rods 65.

In normal operation, should it be desired to elect a pulling action upon some portion of a vehicle body, such as the vehicle panel indicated in dotted lines in FIG. 3, all that is necessary is to make a pair of small apertures 68 through the said vehicle panel, after which the L-shaped hooks or rods, 65 are projected therethrough and assembled in the manner shown in FIG. 3. Once this has been done, an impact wrench of a conventional design, being a power-operated type of wrench, is projected over the head 53 of the screw 4 8 and power applied with the result that the screw 48 is rotated at high speed and the nut 54 and connected tube 55 are longitudinally adjustable thereon for effecting a pulling action through the hook 57, chain 60, stirrup 62 and pressure plate 64 to the vehicle panel element.

In FIG. 3, the screw 48, and the associated tubes 55-58, are shown in a pair of angular dotted line positions to illustrate that with the present construction, the pulling force may be at any desired angle with respect to the upright supports 31, or bracing tubes. Thus a pulling force may be applied in any desired direction, and at any desired height by vertical adjustments of the cross head assembly upon the bracing tubes 31, in the manner above described, or upon the extensions 31.

Support tubes 26 are slidably adjustable upon guide tubes 22, and may be positioned upon either side of the holddown stirrups 24.

While the lower ends of the respective bracing tubes are telescopically adjustable upon the holder rod extensions 30, in use they are iixedly secured thereto by the transverse headed pins 59 which extend through the rcspective pairs of bracing tubes 33 and 35 and through corresponding apertures in the holder rod extensions 30. A series of longitudinally spaced apertures may be formed through extensions 30.

In the described illustrative embodiment of the invention, guide tubes 22, support tubes 26, holder rods Z7, extensions 30, bracing tubes 31, 35, extensions 31' and their end portions 32 are all of square cross section.

Having described my invention, reference should now be had to the following claims.

I claim:

1. A pulling device comprising a rectangular base securable to a floor surface, a pair of parallel spaced, horizontally disposed guide tubes overlying the sides of the base and at their ends axially mounted and journaled thereon, a tubular support slidably mounted on each guide tube, a pair of longitudinally spaced holder rods secured to each support and extending upwardly thereof, a pair of elongated parallel spaced upwardly extending bracing tubes telescopically mounted at their lower ends upon the corresponding holder rods of each of said supports, one of said pairs of bracing tubes being inclined towards the other pair of bracing tubes, means adjacent their upper ends for releasably securing said bracing tubes together, a tubular cross head slidably and adjustably mounted over one of said pairs of bracing tubes, means fixedly securing said cross head in adjusted position, and a power operated pulling means swivelly mounted through said cross head and extending through the other pair of said bracing tubes.

2. In the pulling device of claim l, said guide tubes and tubular supports being square in cross section.

3. In the pulling device of claim 1, a peripheral collar on c ach of said holder rods intermediate their ends, and serving as stops for the lower ends of said bracing tubes.

4. In the pulling device of claim l, one of said pairs of' said bracing tubes being substantially upright, the said means releasably connecting said pairs of bracing tubes together, including horizontal arms secured at their one ends to said substantially upright bracing tubes, the upper end of said other pair of bracing tubes being pivotally connected to said arms.

5. In the pulling device of claim 1, said cross head including a pair of upright tube elements movably mounted respectively on one of said pairs of bracing tubes, means loosely interconnecting the one ends of said tube elements, and swivel mounting means between the other ends of said tube elements supporting said pulling means.

6. In the pulling device of claim l, said cross head including a pair of interconnected upright tube elements mounted respectively on one of said pairs of bracing tubes, the means ixedly securing said cross head in adjusted position, including longitudinal and transverse slits at the one ends of said tube elements, spaced ears projecting from the ends of said tubes, and adjustable fasteners between and interconnecting said ears.

7. In the pulling device of claim 1, said pulling means including a bearing block swivelled upon said cross head, an elongated headed screw journaled through said bearing block, and retained against longitudinal movement, a nut threaded over said screw, a pulling hook swivelly connected to said nut, the head of said screw adapted to be engaged by a power-operated impact wrench.

8. In the pulling device of claim l, said pulling means including a plate, 4a pair of spaced hooks adjustably secured to said plate and adapted to operatively engage a panel of a vehicle to be pulled to a diierent shape, a chain at one end secured to said plate, a nut iiexibly connected to the other end of said chain, a headed screw threaded through Said nut and swivelly mounted and journaled upon said cross head, the head of said screw adapted to receive a power operated impact wrench.

9. A pulling device comprising a rectangular base securable to a floor surface, a pair of supports pivotally mounted upon opposite sides of said base, a pair of 1ongitudinally spaced holder rods secured to each support and extending upwardly thereof, a pair of elongated parallel spaced upwardly extending bracing tubes telescopically mounted at their lower ends upon the corresponding holder rods of each of said supports, said pairs of bracing tubes being inclined towards each other, means adjacent their upper ends releasably securing said bracing tubes together, a tubular cross head slidably and adjustably mounted over one of said pairs of ybracing tubes, means tixedly securing said cross head in adjusted position, and a power operated pulling means swivelly mounted through said cross head and extending through the other pair of said bracing tubes.

l0. In the pulling device of claim 1, a peripheral collar on each of said holder rods intermediate their ends, and serving as stops for the lower ends of said bracing tubes, and a pin extending transversely through each pair of bracing tubes and corresponding holder rods, securing the same respectively against relative longitudinal adjustment.

l1. In the pulling device of claim 1, a peripheral collar on each of said holder rods intermediate their ends, and serving as stops for the lower ends of said bracing tubes, said holder rods outwardly of said collars including extensions of a reduced dimension, cooperatively receiving said bracing tubes, said extensions and latter tubes being of square cross section.

12,. In the pulling device of claim 1, said pulling means including a bearing block swivelled upon said cross head, an elongated headed screw journaled through said bearing block, and retained against longitudinal movement, a nut threaded over said screw, a first tube of square cross section having axially secured therein at one end the said nut, a guide tube of square cross section axially secured at one end to said bearing block and guidably and telescopically receiving said rst tube, a hook swivelly connected to the other end of said first tube, and flexible means connected to said hook adapted for pulling engagement with a part of a vehicle body.

13. In the pulling device of claim l, said pulling means including a plate, a pair of spaced hooks adjustably secured to said plate and adapted to operatively engage a panel of a Vehicle to be pulled to a different shape, a chain at one .end secured to said plate, a irst tube of square cross section at one end iiexibly secured to the other end of said chain, a nut secured within the other end of said tube, a bearing block swivelly mounted on said cross head, a headed screw journaled through said block, retained against relative longitudinal movement and threaded into said nut and a guide tube axially secured to said lbearing block telescopically and guidably receiving said first tube.

References Cited in the tile of this patent UNITED STATES PATENTS 2,140,686 Bennett Dec. ,20, 1938 2,334,080 Freeman Nov. 9, 1943 2,799,920 Hansen July 23, 1957

Claims (1)

1. A PULLING DEVICE COMPRISING A RECTANGULAR BASE SECURABLE TO A FLOOR SURFACE, A PAIR OF PARALLEL SPACED, HORIZONTALLY DISPOSED GUIDE TUBES OVERLYING THE SIDES OF THE BASE AND AT THEIR ENDS AXIALLY MOUNTED AND JOURNALED THEREON, A TUBULAR SUPPORT SLIDABLY MOUNTED ON EACH GUIDE TUBE, A PAIR OF LONGITUDINALLY SPACED HOLDER RODS SECURED TO EACH SUPPORT AND EXTENDING UPWARDLY THEREOF, A PAIR OF ELONGATED PARALLEL SPACED UPWARDLY EXTENDING BRACING TUBES TELESCOPICALLY MOUNTED AT THEIR LOWER ENDS UPON THE CORRESPONDING HOLDER RODS OF EACH OF SAID SUPPORTS, ONE OF SAID PAIRS OF BRACING TUBES BEING INCLINED TOWARDS THE OTHER PAIR OF BRACING TUBES, MEANS ADJACENT THEIR UPPER ENDS FOR RELEASABLY SECURING SAID BRACING TUBES TOGETHER, A TUBULAR CROSS HEAD SLIDABLY AND ADJUSTABLY MOUNTED OVER ONE OF SAID PAIRS OF BRACING TUBES, MEANS FIXEDLY SECURING SAID CROSS HEAD IN ADJUSTED POSITION, AND A POWER OPERATED PULLING MEANS SWIVELLY MOUNTED THROUGH SAID CROSS HEAD EXTENDING THROUGH THE OTHER PAIR OF SAID BRACING TUBES.

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