US2134770A - Control - Google Patents

Description

`Nov. 1, 1938. A H WEBER Y 2,134,770 cQNTRoL Filed April 19, 1937 INVENTOR. #ef/77am l/ef" BY jm/#wwf ATTORNEYS.

Patented Nov. 1, 1938 UNITED STATES CONTROL Herman Weber, Kalamazoo, Mich., assignor to Shakespeare Products Company, Kalamazoo,

Mich.

Application April 19, 1937, Serial No. 137,779

12 Claims.

The main objects of this invention are:

First, to provide a novel andimproved structure for control devices of the push and pull type, wherein looseness and play of the same in their sliding mounting in all positions is autolmatically taken up.

Second, to provide a device of the type described which is simple in operation and the parts are inexpensively produced.

Third, to provide a device of the type described characterized by elements which automatically compensate for wear and maintain snug running engagement at all times.

Objects rel-ating to details and economies of the invention will appear from the description to follow. The invention is dened in the claims.

A preferred embodiment of the invention is illustrated in the accompanyingV drawing, wherein:

Fig. 1 is a view in plan illustrating a device embodying the invention mounted on an instrument panel, said panel being shown in section and broken away.

Fig. 2 is a side elevationl partially broken away and in section on line 2 2 of Fig. 3.l

Fig. 3 is a transverse section on line 3--3 of Fig. 2.

The present invention relates to provisions of an exceedingly simple nature for taking up play between the relatively slidable and stationary parts of a control device of the push-pull type, the details of which provisions are elementary in nature and very inexpensively produced and assembled, relying merely on the resilient action of a bowed spring element to compensate for loose rit between a slidable plunger rod andthe element receiving the same. In my structure, the factor of the eiTect of wear is reduced to zero inasmuch as the element taking up play and looseness automatically compensates for rwear on the same.

Referring to the drawing, reference numeral I indicates anA instrument panel upon which the control device is adapted to be mounted, the panel being apertured at 2 to receive a guide sleeve or tubular support 3 which is threaded at 4 and provided with an annular facing or escutcheon flange 5.

'I'he reference numeral 6 indicates the plunger rod of the control device, the same having a tight t in a hollow head or adapter l, to which the linger piece or handle 8 is secured.

'Ihe rod 6 is annularly grooved at 9 to provide a yoke for connection with the element to which controlling movement is to be transmitted (not shown) and is slotted lengthwise at IU of a width suicient to receive a bowed spring wire element II, one end of which is clamped to the rod in the slot Il) by upsetting the sides thereof to clamp the spring as indicated at I2. The other end of the spring II lies loosely in the groove I0 within the head I and the middle por- `tion thereof is bowed upwardly at I3 to engage the inner side of the tubular support 3 with a sliding frictional action. Obviously the degree of the bow may be varied to vary the amount of force exerted by the spring `I I. y

In assembled relation to the rod 6, the spring II automatically compensates for any looseness or play between the rod and the sleeve 3 slidably receiving the same, rendering'the control device free from rattling of any kind. In addition, it is impossible for'wear on the spring or rod to cause looseness and rattling of the parts since the spring will bow furthenoutwardly to compensate for any wear occurring or, if necessary, additional bend may be imparted to the spring to increase its gripping effect on sleeve 3.

In the embodiment illustrated, the support has a non-circular opening-that illustrated being of hexagonal section. The spring II engaging one of the angles prevents turning or rotary movement of the control rod within its support.

The parts of the invention are exceedingly simple in character and capable of production at very low cost.

I have illustrated and described my improvements in an embodiment which I consider very practical. I have not attempted to illustrate or describe other embodiments or adaptations as it is believed this disclosure will enable those skilled in the art to embody or adapt my improvements as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a push-pull control device including a plunger rod having a push button thereon, said plunger rod being grooved lengthwise of its axis,

end thereof engaging the rod.

2. In a push-pull control device including a plunger rod having a push button thereon, said plunger rod being grooved lengthwise of its axis, the combination of means slidably receiving said rod, and means to maintain a close sliding contact between said means and rod comprising a spring wire element lying in said groove, the ends of said element engaging the bottom of said groove with an intermediate portion of the element spaced substantially from the bottom and in frictional sliding contact with the first named means, one end of said element being fixedly secured to said rod.

3. A control device comprising a plunger rod having an axial recess therein, a wire spring element lying in said recess and secured to said rod, and a support member slidably receiving said rod, said wire spring element engaging the rod at its ends and being bowed medially of its length, said bowed portion of the element being spaced substantially from the bottom of the recess and extending into frictional sliding contact with said support member.

4. A control device comprising a plunger rod having a recess therein, a wire spring element lying in said recess and secured to said rod, and a support member slidably receiving said rod, said wire spring element being bent to space a portion of the same substantially above the bot` tom of the recess, said portion extending into frictional sliding contact with said support member.

5. A control device comprising a support having a non-circular control rod receiving opening, a control rod slidable in said opening and provided with a longitudinal groove, a head member sleeved on the outer end of said rod and embracing the outer end of said groove, said head member being externally shouldered, a finger piece mounted upon said head member to engage said shoulder, and a bowed spring approximating in length the length of the control rod disposed with its ends within said groove, the walls of said groove being clamped upon the inner end of said spring lying in said groove, the outer end of said spring lying within said head member, the bowed intermediate portion of said spring having frictional engagement with said support to prevent rattling and apply friction and engaging an angle of the non-circular opening therein to prevent rotary movement of the rod within the support.

6. A control device comprising a support having a non-circular control rod receiving opening, a control rod slidable in said opening and provided with a longitudinal groove, a head member sleeved on the outer end of said rod and embracing the outer end of said groove, and a bowed spring disposed with its ends within said groove, the walls of said groove being clamped upon the inner end of said spring lying in said groove, the outer end of said spring lying within said head member, the bowed intermediate portion of said spring having frictional engagement with said support to prevent rattling and apply friction and engaging an angle of the non-circular opening therein to prevent rotary movement of the rod within the support.

7. A control device comprising a support, a control rod slidable in said support and provided with a longitudinal groove, a head member sleeved on the outer end of said rod and embracing the outer end of said groove, and a bowed spring disposed with its ends within said groove, the walls of said groove being clamped upon the inner end of said spring lying in said groove, the outer end of said spring lying within said head member, the bowed intermediate portion of said spring having frictional engagement with said support to prevent rattling and apply friction.

8. A control device comprising a support having a non-circular control rod receiving opening, a control rod slidable in said opening and provided with a longitudinal groove, a head member sleeved on the outer end of said rod and embracing the outer end of said groove, and a bowed spring disposed with its ends within said groove, the inner end of the vspring being xedly secured within said groove, the outer end of the spring lying within said head member, the bowed intermediate portion of said spring having frictional engagement with said support to prevent rattling and apply friction and engaging an angle of the non-circular opening therein to prevent rotary movement of the rod within the support.

9. A control device comprising a support, a control rod slidable in said support and provided with a longitudinal groove, a head member sleeved on the outer end of said rod and embracing the outer end of said groove, and a bowed spring disposed with its ends within said groove, the inner end of the spring being iixedly secured within said groove, the outer end of the spring lying within said head member, the bowed intermediate portion of said spring having frictional engagement with said support to prevent rattling and apply friction.

10. In a control device including a sliding member, a support member slidably receiving the sliding member, and means to insure a close sliding iit between the members, and prevent rattling thereof, comprising a bowed wire spring element secured at one end to the sliding member, said sliding member having a longitudinal slot adapted to slidingly receive the other end of the element with the medial portion of the element spaced substantially above the bottom of the slot and extending into frictional sliding contact with the guide.

11. In a control device including a plunger member and a support member receiving the plunger member and means to insure a close non-rattling sliding fit between the members, comprising a bowed wire spring element arranged between said members, one of said members having a slot adapted to receive and engage the element along the bottom of the slot, said element being spaced substantially from the bottom of the slot by the bow therein and extending into frictional sliding contact with the other member.

l2. In a control device including a plunger member and a support member receiving the plunger member and means to insure a close non-rattling sliding fit between the members, comprising an element arranged between said members, one of said members having a slot adapted to receive and engage the element along the bottom of the slot, said element having a portion thereof spaced substantially from the bottom of the slot and extending into frictional sliding contact with the other member.

HERMAN WEBER.

Images