US1284127A

US1284127A - Grinder.

Info

Publication number: US1284127A
Application number: US22291018A
Authority: US
Inventors: Carl D Miller
Original assignee: Individual
Current assignee: Individual
Priority date: 1918-03-16
Filing date: 1918-03-16
Publication date: 1918-11-05
Anticipated expiration: 1935-11-05

Description

C. D. MILLER.

GRINDER. APPLICATION 'mw MAR-16, was.

1,284,127 Patented NQV. 5, 1918..

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awning/:

cant. i). ll/KILLER, or Kansas orrr, Mrssounr.

GRINDER.

To all whom it may concern:

Be it known that l, CARL D. MILLER, a citizen of the, United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented a new and useful Grinder, of which the following is a specification. 1

The device forming the subject matter of this application is adapted to be employed for grinding the valves of internalcombustion engines, and the invention aims to provide novel means whereby an oscillating movement and a progressive rotary movement may be imparted to the valve, as the valve is rotated on its seat, to effect the grinding operation.

Another object of the invention is to provide novel means whereby a chamber is formed for the reception of the mechanism which connects: the motor with the grinding shaft.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which. the present invention appertains.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the preclse embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

lln the accompanying drawings Figure 1 shows in longitudinal sectlon, a valve grinder constructed in accordance with the present invention, the same being shown in operative relation to the valve to be ground, and parts being left in elevation,

Fig. 2 is a cross section taken approximately on the line 22 of Fig. 1; and

Fig. 3 is a fragmental elevation showing a portion of the grinding shaft.

lln carrying out the invention there is provided a casing 1 which may be made of aluminum or any suitable material, the easing being of tubular form and including a reduced neck 2 in which is mounted a switch 3 of any desired form, in circuit with a conductor 4:. The casing 1 is supplied with an internal shoulder 5 against which abuts a transverse platform 6 carrying two posts 7 constituting a part of, or supporting an electrical motor 8 supplied specification of Letters Batent.

Patented ne 5,1918

Application filed. March 16, 1918. Serial No. 222,910. a

with current from the conductor tandoori:

which is located a bearing bushing 12.

ring 11 is interposed between; the cap 10 and the platform 6 and is bound closely against the platform and the cap when the cap is threaded on the casing l, The c011 struction is such thata chamber 15 is fash ioned within the ring 14: and between the platform 6 and the end of the cap 10, this chamber being fluidtight so asto receive a grease or lubricant in which sundry parts hereinafter described operate.

A grinding shaft l6is journaled for re: tation in the bushing 12 and is provided with a bit 17 of any desired type, adapted to coact witha valve 18, to rotate the valve on a seat 19 formed in a cylinder; 20, the object in viewbeing to effect a grindingof the valve in a well-known manner, A stub;

shaft 21 isjournaled in the platformb and has a socket 22 of rectangular cross section, the socket receiving the armature. shaftf), the armature shaft and the inner end of the stub shaft 21 being connected by a cross pin 23. The construction issuch that a secure driving connection between the armature shaft 9 and the stub shaft 21 is afforded, the stub shaft always being rotated when the arn'lature shaft is rotated.

The forward end of the stub shaft 21 may be pointed as shown at 2 1 and is received for rotation in a recess 25 formed in the butt end of the grinding shaft 16. The stub shaft 21 passes through a washer 26 held against the platform 6 by the rear end of the shaft 16, the washer carrying a packing 27 adapted to prevent the oil in the chamber 15 from working backwardly into the compartment which contains the motor 8. A pinion 28 is fashioned in the stub shaft 21. A disk 29 is rotatably mounted on the shaft 16 and is held in abtitment with the rear face of the end wall of the cap 10 by means of a flange 31 on the shaft 16, the disk including a counterpoise 30. The disk 29 carries a stub shaft 32 on which is mounted a gear wheel 33 meshing into the pinion 28 and operating in a slot 40,

fashioned in the side of theshaft 16 and I 35 pivoted on a stud 36 constituting a part of an arm 37 carried by the grinding shaft 16.

An oscillating movement is imparted to the grinding shaft 16 and consequently to the value 18 by a mechanism embodying the is rotated, as; aforesaid, the

pivot elements

34 and 36 are moved off the straight-line connecting the stub shaft 32 and the stub shaft 21, whereupon the leverage upon the shaft 16 becomes greater than the leverage upon the disk 29, the rotation of the latter ceasing, and the pinion 33 being rotated on the disk 29 to cause the oscillation of the shaft 16 and the valve 18 as above described.

Having thus described the invention, what 1 is claimed is L In a valve grinder, a support; a grinding shaft ournaled therein and provided with a laterally extended arm; a disk mounted to rotate on the shaft and supplied with a counter-Weight located in a common plane with the disk; a gear wheel journaled on the disk in eccentric position wlth respect to the center of rotation on the disk; a driving pinion meshing into the gear wheel and supported for rotation independently of the disk; and a link having its ends pivoted, respectively, to the gear wheel and to the arm.

2. In a valve grinder, a casing having an internal shoulder; a removable platform abutting against the shoulder and forming a rear compartment in the casing; a cap mounted on the casing; a ring open at both ends and disposed between the cap and the platform, and bound against the platform by the cap, to hold theplatform on the shoulder, the cap, the ring and the platform defining an oil compartment; a motor in the rear compartment; means for connecting the motor with the platform, whereby the motor and the platform may be removed together; and a shaft independent of said means, the shaft passing throu h the platform; a grinding shaft j ournaled in the cap; and an operative connection between the shafts, said connection being located in the oil compartment.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

CARL D. MILLER.

Witnesses:

WARREN H. TURNER, L. D. ORMSBEE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, .D. 0.