US1697921A - Repair stand - Google Patents

Description

Jan. 8, 1929. 1,697,921

I J. KROGMAN REPAIR STAND Filed June 1, 1928 4 Sheets-Sheet l [nwmar J. KROGMAN Y .RIJPAIR STAND Jan. 8, 1929.

Filed June 1. 1928' 4 Sheets-Sheet 2 Q I 4 ln'uenmr I V0650}? ffwogman 'J. KROGMAN Jan. 8, 1929.

REPAIR STAND Jan. 8, 1929. l 13,97,921

J. KROGMAN REPAIR STAND Filed June 1, 1928 4 Sheets-Sheet 4 Patented Jan 8, l ga meiszi JOSEPEI momma, or Prism; Wisconsin.

REPAIR scram),

Application filed June 1, 1928. Serial No. 282,126;

for cleaning purposes, and to further facili- L l r v a tare grinding of the vali es.

7 One of the important objects of the present invention is to provide a repalrstand which includes a pivoted cradle upon which is adapted to be secured the head of'the motor carrying the valves and the springs associated therewith, means being provided for positive. 1y securing the head in a rigid manner on the cradle, the cradle being. mounted for swinging. movement in a frame, means being provided for locking the cradle against-swinging movement.

A further-object is to provide a repair stand of the above mentioned character wherein means is provic ed for preventingthe displacement of the valves after the springs have been removed from the upper ends of the valve stems, said means being removable when the cradleis reversed, in order to permit the removal of the valves or to facilitate grinding of the same while remaining in said engine head that is secured on the cradle.v

Still a. further object is to provide a repair stand of the above mentioned character wherein the same includes a valve spring depressing member that is removably supportedin a yoke, and Which yoke is mounted for rotation on the upper end of a rod, whereby said valve spring depressor may be positioned over any onset the valve stems, meansb'eing provided for normally holding the valve sprin'gdepressor member in a raised inopera tive' position, a foot operated' member being provided to effect the downward movement of the valvespring depressor after the same has been properly position d over one of the valve stems, whereby to compress the spring and facilitate the removal of the key and said spring. 7 1

A further object is to provide a repair stand of the above mentioned character which is simple in construction, inexpensive, strong and durable and further well adapted to the purpose for which it is designed.

Other objects and advantages of the in vention will become apparent from'the following description when taken in connection with the accompanying; drawings.

In the accompanying drawings wherein like reference characters indicate corr'esponding' parts throughout the several views Figure 1 is a top plan View of the repair stand embodying my invention showingthe head of a motor provld'ed with overhead valves secured in its proper position. on the cradle.

Figure 2 is a vertical sectional view through V the cradle showing the head of the motor secured thereon, and showing the valve spnng depressing.mechanism inside elevation.

Figure 3 is atop plan view of the repair 7 stand with the head of the engine removed and showing the valve supporting bar see cured longitudinally onthe cradle;

Figure 4 is a. detail perspective view of the pan forming a part of the invention.

Figure 5 is a cross sectional view through the pan showingthe manner in which the same is supported on the frame.- I

Figure 6 is a side elevation ofthe repairstand, parts being shown in section;

Figure 7 is a detail sectional View showing the securing means for one end of the valve supporting bar; a

Figure :8 is an end elevation of there'pair stand, par-ts being shown in-section, and

Figure 9 is a detail perspective view, of the horizontally disposed rod that supports the valve spring depressor element in its outer end. t

In the drawings wherein-forthe purpose-of illustration is shown the preferred embodiment of myinvention, the numeral 1 desig natesa substantiallycircular base and exten'ding upwardly from the central portion thereof is the tubular standard 2,- the lower end portion of which isformedwith the longitudinal slots3, as shown mor'e clearly in Figure 8, and the presently described.- v

A substantially U-sha-ped' frame 4 has its base portion securedon. the upper end of the standard2 atits intermediate portion in such a manner as to provide a'unitary structure;-

Forming a salient part ofthe present invention is the cradle; designated generally by the numeral '5,'and this cradle comprises a substantially rectangular shaped: frame, the" longitudinal sides of which are'd-isposed' in a plane at rightangles .to'theend's of the frame.

Furt-hermorethe vertically disposed en'cl por tions 6 ofthe' rectangular shaped cradle 5. gradually converge ura downward directi on purpose thereof will be Y toward their intermediate portions as more clearly disclosed in Figure 2. V

The cradle is disposed horizontally between the upper ends of the arms of the U- shaped stationary frame 4 and suitable pivot forming bolts 7 extend through the intermediate portions of the respective ends of the cradle and the upper ends of the adjacent arms of the U-shaped frame l-whereby said cradle is pivotally mounted in the top of the stationary frame. 7

A "laterally extending handle. 8 is arranged at one end of the cradle 5 and forms a continuation of one of the ends 6 as shown veryclearly in Figures 1 and3 of the draw ing, and a knob 9 is carried on the outer end of this handle. This provides a means whereby the cradle may be manually swung on its pivots 7 as will be hereinafter described in detail.

For the purpose of holding the cradle 5 in a hOIlZOlllZEtl posltion against swlnging move ment, there is provided the elongated lever lO that is pivoted at its upper end to the other end of the cradle 5 as at 11, and thislever extends downwardly through a slot 12 formed in'the base portion of the U-shaped frame 4 adjacent the vertically disposed arm 13 of said frame, and an actuating handlel l: is arranged on the lower end of the lever. As is more clearly dlsclosed in Figure 6, the pivoted lever is formed with an offset nose 15 that is held in engagement'with the base of the U-shaped' frame 4 by means of the spring q 16 and when the-handle 14E is actuated in a apertured adjacent lugs 18 that extend from the sides of the head 19 of a motor, the head in the present instance being that of a motor of the Chevrolet type. Suitable nuts 20 are threaded on the upper ends of the stud bolts 1 for engagement with the top faces of the respective lugs 18 for rigidly securing thehead 19 on the cradle, as shown clearly in the drawings and for the purpose of supporting the valves from dropping out of the head 19after the springs have been removed from the upper ends of the valvestems. I provide the longitudinally extendingvalve supporting bar 21 that extends longitudinally beneath the central portion of the head 19 and the ends of this bar 21 are slotted as shown at 22 with reference more particularly to Figure 7. An

angular bracket 23 is carried by the intermediate portion of each end 6 of the cradle 5, and the slotted ends of this bar 21 rest on the horiwith a vertically disposed eye or zontal portions of the respective brackets, and a bolt 24 projects through the horizontal through the adjacent slotted end of the bar 21, and a thumb nut 25 is threaded on the upper threaded end of the bolt, inthe manner as also shown in Figure 7 to positively secure the valve supporting bar in a rigid position on the cradle frame.

Also forming an important part of the presentinvention is the rod 26 that is disposed in the tubular standard 2 for vertical sliding movement, the upper portion of this rod extending through the base of the U- shaped frame, and thence being disposed lat erally as at 27 and thence upwardly as at 28 for disposition at the rear side of the cradle, and the upper end of this rod projects above the head 19, and has removably supported thereon the yoke 29.

A horizontally disposed arm 30 is slidably arranged through registering openings formed in the upper ends of the arms of the yoke 29 and one end of this arm is formed collar 31, as clearly shown in Figure 9.

portion of each bracket for disposition' The intermediate portlon of the arm '30 rests on the upper end of the rod 28 to prevent downward sliding movement of the yoke 29 with respect to this portion ofthe rod and supported in the vertically disposed eye or collar 31 is the shank 32 that has arranged on its lower end a valve spring depressor 33,

a knob 34 being detachably secured on the diate portion projecting through the slotted lower end 3 of the tubular standard 2 as well 7 as through a slot formed in the lower end of I the rod 26 and the rear end of this foot lever is pivoted in an upstanding bracket 36 arranged on the base 1, while a foot treadle 37 is arranged on the forward end of this foot lever, A retractile coil spring 38 is connected at its lower end to the pivoted end portion of the foot lever 35,-while the upper end is secured to the standard 2 for the purpose of normally holding the foot lever 35 in a raised position whereby to hold the rod and the parts carried on the upper end thereof in a raised inoperative position.

A pain '39 has its intermediate portion formed with the recess 40 to accommodate the 7' from the head of the motor, while the necessary repairs are being made to the valves.

When the motor head 19. is secured on the cradle in the manner as shown in Figure 1,"

over, the steps on the treadle 3'? thereby mov ing the, foot lever 35 downwardly which will result in the rod 36 moving downwardly and at the same time causmg the member 33 to engage with the spring 43 of the selected valve stemso that the particular spring will be depressed to permit the removal of the key 44;, and said spring. This operation is repeated until all the keys and springs have been removed from their respective-valve stems. It is of course understood that as soon as pressure is taken off of the foot lever, the retract-ilc coil spring 38 will automatically move the parts to their initial inoperative position, as shown in Figure 2.

The bar 21. will prevent the valves from dropping downwardly out of the head 19. As beforementioned, all of the springs and keys are removed from the upper endsof the valve stems after which the cradle is swung a complete revolution on its pivots 7 by disengaging the locking lever 10 from the frame at, and actuating the-handle Siso that the head 19 will be disposed in an upside down position, after which the frame is locked against swinging movement. This will permit the valve to be readily removed from the head or to facilitate grinding of the valves,

while positioned in the head, with the use of any conventional valve grinding tool.

When the head 19 is turned upside down, the arm will be disposed parallel with the rectangular shaped cradle 5 in an out of the way position as shown very clearly in full lines in Figures 1 and 3 of the drawings.

It will thus be seen from the foregoing description, that I have provided a repair stand that is particularly adapted to be, used in working upon the valves of a head of a motor that employs overhead valves, and by reason of its simplicity the parts can be read-- ily and easily adjusted and actauted.

Furthermore a repair stand of this character will be strong and durable and at all times positive and efioient in carrying out the purily and easily adjusted and actuated.

While I have shown the preferred embodimentof my invention it is to be understood that minor changes in the'size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention and the scope of the appended claims.

Having thus described the invention, what- I claim as new and desire to secure by Letters Patent is 1 1. In a repair stand of the class described,

a frame, a horizontally-disposedengine head supporting cradle mounted inztheframe for swinging movement, means for securing said cradle in a stationary position,means for securing a motorhead on the cradle, a member carried by the cradle for disposition beneath,

said headto prevent the dropping out of the f valves from the head during-the removalof. the springs and the key-from the: valve stems of saidvalves, means for facilitating thecompression of the valve springs while the. head is mounted on the cradle, the lastmentioned means including a horizontally disposed arm, a vertically movable support therefor, a valve spring compressing element carried by the outer end of saidarm, said arm being capable of sliding and swinging movement in a horizontal plane for positioning the valve spring com pressing member.

over any one of't-ne valve springs, means for 1 normally holding the support forthe arm in a 'ILlSGCl position to. maintain, the valve spring compressing member in an inoperative positlon, and means foractuating said vertically movable sup-port tomove the valve spring compressing member into engage ment with the selected valve spring. o

2. In a repair stand ofthe class described, a base, a tubular standard extending, upwardly therefrom, asubstantially Usshaped stationary framemounted on the upper end of the standard, a motor head supporting cradle mounted between the upper ends of the arms of said U-shaped. frame for swinging movement, means. for securing; the'head on the cradle, means for lockingthe cradlein a stationary position, abar detachably secured on the cradle and extending longitudinally beneathithe .head of the motor to sup port the. valves of the-head from dropping out when the head is positioned on the cradle, and means for compressing the valve springs associated with the upper ends of the valves that project through the top of the head. to facilitate removal of the springs and the locking keys, said cradle being'swung to a reverse position when the locking means therefor is released to permit removal of the valve holding bar, and said valves.

3. In a repair stand of the class described,

loo

a base, a tubular standard extending upon the cradle, means for locking thecradle I in a stationary position, a bar detachably se- .cured on the cradle and extending longitudinally beneath the head of the motor to sups port the valves of the head from dropping out when the head is positioned on the oradle,and means for compressing the valve springs associated with the upper ends of V the valves that project through the top of the head to facilitate removal of the springs and the locking keys, said cradle being swung to a reverse position when the lock-v ing means therefor is released to permit removal of the valve holding bar, and said valves, the last mentioned means compris ing a rod slidable 1n the tubular standard on, an arm disposed horizontally through the upper endsof the arms of the yoke for rest upon the upper end of said rod, 21. valve spring depressing member carried by the outer end of said armand adapted to be selectively positioned over any one of the valve springs, said valve depressing member be ing normally held in a raised inoperative position, and} means operable near the base for moving the valve depressing member into a loweredv operative position. for engagement with the selected valve spring.

4. In a repair stand of the class described, a base, a tubular standarc extending upwardl therefrom, a substantially U-shaped stationary frame mountedon the upper end of the standard, a motor head supporting cradle mounted between the upper ends of the arms of said U-shaped frame for swinging movement, means for securing the head on the cradle, means for locking the cradle in a stationary position, a bar detachably secured on the cradle and extending longitudinally beneath the head of, the motor to support the valves of the head from dropping out when the head is positioned on the cradle,

and means for compressing the valve springs associated with the upper ends of the valves that project through the top of the head facilitate removal of the springs and the locking keys, said cradle being swung to a reverse position when the locking means therefor is released to permit removal of the valve holding bar, and said valves, the last mentioned means comprising a rod slidable in thetubin lar standard ant through the base the U shaped frame, the intermediate portion of said rod being disposed laterally, the upper end of the rod being disposed upwardly, yoke mounted on the upper end of the rod for rotation thereon, an arm disposed horizontally through the upper ends ofthe arms of the yoke for rest upon the upper end of said rod, a valve springdepressing member carried by the outer end of said arm and adapted to be selectively positioned over any one of the valve springs, said valve depressing member being normally held in a raised inoperative position, means operable nearthe base for moving the valve depressing member into a lowered operative posit-ion for engagement with the selected.

valve spring, said last mentioned means comprising a foot lever having its intermediate portion extending through the tubular standard, said standard being mounted to accommodate the lever, the lower end of the rod being formed with a slot through which the foot leverextends, one end of the lever being pivoted on the base, a foot treadle on the free end of the lever, and a retractile coil spring connecting the pivoted end of the foot lever with the standard to normally hold the foot lever and said rod in a raised position. v

In testimony whereof I aflix my signature.

, JOSEPH KROGMAN. V

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