US 1322979 A
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Description (OCR text may contain errors)
H. C. WAITE.
EXTENSION CONTROL DEVICE. l
APPLICATION FILED OCT, 22, |911.
@y/QU??? HARRY C. WATE, F ELGIN, ILLINOIS.
Specification of Letters Patent.
Patented Nov. 25, 1919.
Application led October 22, 1917. Serial No. 197,988.
i useful extension control device, particularly designed for application to motor vehicles, in order to render easily accessible the carbureter adjustment mechanism commonly employed. The invention will be fully .understood from the following description of one embodiment thereof taken in connection with the accompanying drawing, in which- Figure 1 is a fragmentary longitudinal sectional view through the dash and cowlboard of a common type of motor vehicle, showing the .manner of mounting my improved extension control thereon. Fig. 2 is an enlarged face view of the supporting bracket for the control device; and Fig. 3 is an'enlarged side elevation, partly in section, through the extension control and its bracket. Y
Referring more particularly to the drawings, the numeral 10 designates a earbureter having a needle-valve 11, by which adjustment of the carbureting effect is obtained. 1n certain types of motor vehicles it has been common to provide means for adjusting this needle-valve from the dashboard or" the vehicle, which may, for example, oc-
cupy the position shown in the drawings. For this purpose the dashboard, designated 12, is drilled at an angle to receive a controlrod'13, having a forked end le, which engages slots in the head of the needle-valve 11, the fork and slotted head constituting a simple form of universal joint. lt is the particular object of my invention to provide an extension member for the control-rod 13, in order that the actuation of the rod may be more conveniently effected. This object l accomplish by aiixing to the downturned edge 15 of lthe dashboard-cowl, an angular 'plate-bracket 16, supporting an extension control-rod 17 made in two jointed sections and disposed at an angle to the standard control-rod 13. VFor joining these angularly related members l provide a universal coupling in the form of a relatively sti' helical spring 18, which may be conveniently secured to the rod 17 by being caused to engage threads' 19 in the end of the latter, these threads being of approximately the pitch of the spring itself. A fitting 20, having similar threads in engagement with the lower end of the helical coupling 18, may be readily secured to the standard controlrod 13 by being sleeved upon the latter and locked with a set-screw 21, as illustrated.
The upper end-section of the extensionrod 17 is secured to the lower end by a second vhelical spring 18 and has pinned thereto a knurled adjusting head 22, the pin 23 being extended to form a pointer which operates over graduations on the face of the bracket 16, as shown in Fig. 2. A leather friction washer 24.1 is preferably disposed between the base of the head 22 and the opposed face of the bracket, being held in frictional engagement with both of these members by a small compression-spring 25, abutting against the lower face of the bracket and against a collar 26 on the extension-rod.
In the application of my extension control apparatus to the well known standard carbureter control devices of the form illustrated, it is only necessary to remove any bent eX- tremity or adjustment head from the upper end of the control-rod 13, secure to the latter the fitting 20 and moiitthe. bracket 16 upon the cowl-board of the vehicle. By these operations it becomes possible to control the needle-valve 11 through the adj ustment-head 22 of the eXtension-control-rod, which lies approximately rithelevel of the cowl-board and is therefore easily accessible from the operators seat .pf the vehicle. The universal. coupling 18 formed by the relatively stid helical coil is particularly advantageous in the use illustrated, sineift has no lost motion and cannot develop lost motion through wear. This isof importance, since any lost motion in the connections of the parts would render inaccurate the adjustment of the carbureter and the indications of the dial over which the pointer 23 operates.
By the consti-,notion illustrated the needlevalve 11 mayhe set in the normal running position, the pointer 23 turned to the normal position` on the dial, as illustrated in Fig. 2, and the fitting 20 then locked to the controlrod by the set-screw. The parts will be frictionally retained in this position by the washer 24 and adjustment of the needlevalve in either direction may be effected and maintained with the greatest accuracy.
While ll have shown and described in considerable detail one speciic embodiment of my invention, it will be understood that this is illustrative only and for the purpose of making the invention more clear, and that I' do not regard the invention as limited to these details nor to any of them except in so far as such limitations are included Within the terms of the accompanying claim, in which it is my intention to claim all novelty inherent in my invention as broadly as is permissible in View of the prior art.
What I claim is:
An extension control device adapted for application to motor vehicles and comprising extension rod sections and a control rod and universal joints connecting the extension rod sections to each other and to the control rod, a bracket adapted for attachment to the vehicle and forming a means for Isupporting the inner end of the extension rod from the cowl-board of the vehicle, ahead mounted on the inner end of the extension rod, a friction washer between the head and the bracket, and means for exerting a tension on the rod to hold the head and Washer in frictional engagement with the bracket.
HARRY c. WAITE.