US2588932A

US2588932A - Positioning mechanism

Info

Publication number: US2588932A
Application number: US133434A
Authority: US
Inventors: Winfield S Klingenberg
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-12-16
Filing date: 1949-12-16
Publication date: 1952-03-11
Anticipated expiration: 1969-03-11

Description

March 11, 1952 w. s. KLINGENBERG 2,588,932

POSITIONING MECHANISM Filed Dec. 16, 1949 2 SHEETS-SHEET 1 T mhmlnnhu 45 0 46 ix 32 :m

" INVENTOR umtn' wz 47 ATTORN EY w. s. KLINGENBERG 2,588,932

POSITIONING MECHANISM 2 SHEETSSHEET 2 7 6 r r EEMN m m u March 11, 1952 Filed Dec. 16, 1949 INVENTOR M6.k/r' l enu e) BY ATTORNEY Patented Mar. 11, 1952 UNITED STATES PATENT OFFICE asssmsz POSITIONING MECHANISM 'Wirifielld s."K-lingenlniir'g; staniroim -cbim. Applicationbecembcr 16,- 1949, Serial No. 133 134 This invention relates to mechanism for setting into particular positions apart of ama'chinefas for example, a machine tool.

It is the object of my invention tocontribute a setting mechanism that is extremely simple and effective, and yet will allow the positioning of one part of a machine in very accurate relation to the .the relation therebetween. As a further feature of this part of the invention, the adjustingm'ember is adapted to be located in a fixed" position relatively to a dial or other part of the machine, whereupon the actuation of the adjusting means between the adjustingme'mber and the operating element with be effective to rotate the positioning shaft. It is the feature of this part of the invention that this adjustment may be or a very fine character, as for example, seconds of a degree where the adjustment is angular.

I have thus outlined rather broadly the more important features of my invention in order that the detailed description thereof that followsmay be better understood, and in order that my contribution to the art may be better appreciated. There are, of course, additional featuresof my invention that will be described hereinafterand which will form the subject of' the claims appended hereto. Those skilled in the art will appreciate that the conception on which mydisc1o sure is based may readily be utiliz'edas a basis for the designing of other structures for carrying out the several purposes of my invention. "Itis important, therefore, that the claims to be granted me shall be of sufficient breadth'to prevent the appropriation of my invention by those skilled in the art.

Referring now to the drawings, Fig. I is' a'plan view looking downwardly on the assemblyof my invention. Fig. 2 is an enlarged view of'pa'rt of Fig. 1. Figure 3 is a vertical section takenalong lines 3-3 of Fig. l. Figure 4 isa section taken a1ongjlines4-4 of Fig-3,

. iReferringnow more particularly to-the-draw- 'ifigs," reference numeral I "indicates th'pos'itiom ing shaft ofmy invention mounted for rotation relatively to'a base bearing II and a dial i2 secured to the base bearing by studs I3. The'dial I2 maybe graduated indegrees D and. minutes M; as bestshown in'Fig. 1. Thus, because I use a' 40 to 1' reduction gearingfbetween the positionlng shaft IOand "the" mechanism positioned thereby, the dial I2 shown graduated to 9, it being understood that 40 complete rotations'of the shaft I I) relatively'to'the dial'will rotate themechanism positioned by the shaft IIl'a distance of 360.

"member of myin'vention. It is quite obvious that the arm l'lwill'rotate with arm IE on the axis of shaft I 0 if means areprovided' for securing the arm I! to the arm I6. Suchmeans will be described presently, but at this point it will be-well to"note that the two'a'rms I1 and It will be main- 'tained in position relatively to the shaft I0 and sleeve It We washer I8'held in place by a nut I 9.

"insertion ofthe end 20 of a block 2I.

fastened in place relatively to the arm I6 by As is probably best seen in Fig. 4, the free end of the arm I6 is formed with an opening for the Block 2I a stud 22 threaded into the-block 2I and holding in position a washer 23 that presses against the in arm' I6.

'50 'is adapted to house a lug portion 3| of a block 32.

lower surface of the arm I6. I Block 2I is threaded at 24 for the threaded end 25 of an adjusting screw 26. Preferably, the block 2| is drilled at 2?" for a stud 28 that is inscrew-threaded relation thereto at 29. The block 2I is slotted at 30 with the slot extending to thethreaded bore 24 in which the end 25 of the screw 26-is housed. By

' rotating the stud 28, as is clearly apparent from Fig. 3; the pressure relationship between the block 2 I and the screw 26 maybe adjusted to increase ordecreasetheresistance to the rotation of the screw 26. i

The left-endof the-arm II, as seen in Fig. 3, is formedwith an opening similar to that found This opening, as best shown in Fig. 4,

*A stud- 33 holds the block 32 and its portion 3| -in"assembled relation to arm I! through the intermediary of a washer 34 as is quite apparent. it-washer 35 is fitted onto the" shaft 26' and fits in -a deer-animator the" block 32 so as to prevent vfinger piece 31 will effect rotation of the shaft 26, and since the shaft 26 cannot move relatively to block 32, will affect movement of adjustment of block 2| relatively to block 32. It will further be appreciated that at all times the two arms 7 I6 and I1 will be rotatable together through the connection between the two arms effected by the screw 26 and the blocks 2| and 32.

For locking the two arms I6- and I1 to one another and for integral movement, arm I6 is formed with a threaded bore 40 within which .fits the threaded bolt portion 4| of a finger piece 42. The upper end of the threaded bolted portion 4| lies within a slot 43 in the arm I1 as best illustrated in Fig. 1. Therefore, the bolt 4| acts to limit the relative movement between the arm I6, I1. Rotation of the finger piece 42 acts to draw the two arms toward one another so as to lock them against relative movement when adjustment therebetween has been effected.

Finger piece 31, as best illustrated in Fig. 1, is formed with a calibrated annular dial 45,'the numerals on the dial representing seconds of a degree. Engraved 'on the upper surface 46 of the block 32 are numerals N, the space between consecutive numerals designating'one minute. Numerals representing ten minutes are engraved on the surface 46, as best seen in Fig. 2, because ten minutes represents the maximum movement of adjustment between arms I6 and I1. An indicator pointer 41 is fixed by screws 48 to the upper surface of the block 2| and co-acts with the numerals N, on the surface 46, as is quite clearly apparent in Figs. 1 and 2.

Those skilled in the art will now appreciate that by rotation of the finger piece 31 through a partial revolution, the two arms I6, I1 will be rotated relatively to one another a distance representing seconds of rotation of the shaft I6. This movement Will be measured by the figures in the annular dial 45. hold in fixed position the arm I1, the rotation of the finger piece 31 through one revolution would effect the rotation of the shaft I6 sixty seconds or one minute. This one minute will, of course, be indicated through movement of the pointer 41 relatively to the numerals N engraved on the surface 46 of block 32. Further, the maximum adjustment of the two arms I6, I1 relatively to one another represents II) minutes movement of the shaft I0 relatively to the base bearing II and the dial I2.

For locking the arm I1 relatively to the base II and dial I2 whereby to make possible fine adjustments of the shaft II] by finger piece 31, the dial I2 is formed with a series of bores 56 positioned ten minutes apart. The several bores 56 are adapted to co-act with the lower end 5| of a detent pin 52 carriedby a sleeve 53 that is fixed to the arm I1. The upper end of the detent pin 52 carries a finger piece 54 fixed thereto at 55. Finger piece 54- is adapted to lift the detent pin 52 against the pressure of'a spring 56, after which a holding pin 51, by entry into a groove '58, may hold the pin 51 upwardly and away from the dial I2. An indicating spring 59 is a In other words, were we to utilized to indicate just what is the position of the arm I1 relatively to the dial I2.

It will now be well to outline just how the mechanism of my invention acts in a machine tool. Thus, if it is desired to rotate the shaft III a distance of several degrees, some minutes, and some seconds, the finger piece '54 is first moved upwardly to move detent pin portion 5| from out of one of the bores of the dial I2. It is then possible to rotate the arm. I1, and through the arm I1 the arm I6 and shaft II). During such rotation the adjusting mechanism will be in the position of Figure 1 with the arms I6, I1 locked together by the finger piece 42 and its threaded bolt portion 4|.

Rotation of the shaft I0 takes place until the pointer spring 59 indicates the number of degrees and ten minute intervals thereof nearest the predetermined setting of the shaft I!) required. At this point the holding pin 51 will be raised out of the depression 58 and the detent pin 52 allowed to drop under the influence of spring 56 until its lower end 5| enters a bore 5|]. Thereafter the finger piece 42 is rotated counterclockwise to release the arms I6, I1 for movement relatively to one another within the limits of the slot 43. It is then possible to rotate finger piece 31 to adjust the position of the arm I6 relatively to the arm I1, arm I1 being held firmly against movement relatively to the dial I2. This movement of adjustment is measured by pointer 41 relatively to the numerals N engraved on surface 46, and also by the annular dial 45. Further, any movement of adjustment that takes place between the arms I6, I1 effects movement of the shaft I0 through the number of minutes and seconds of movement of adjustment measured by dial 45 and pointer 41.

I believe it is now quite clearly apparent that through use of the mechanism I have devised it is possible to obtain effective, accurate movemen of adjustment of the shaft I6.

I now claim:

1. In a combination of the class described, a positioning shaft, a bearing member for said shaft including a dial relatively to which said positionlying operating element and having a screw threaded bore within which is threadedly mounted said screw threaded shaft, and means for fixing said adjusting member relatively to said dial and bearing member.

2. In a combination of the class described, a positioning shaft, a dial relatively to which said positioning shaft is rotated, an adjusting member rotatable in the axis of said shaft and relatively to said shaft, an operating element secured to said shaft for rotating said shaft, a stud secured block extending upwardly from said adjusting member, a stud secured block extending upwardly from said operating element, screw threaded means extending between said blocks for adjusting said operating element relatively to said adjusting member, and means for securing said adjdusting member against rotation relatively to said ial.

3-. In a combination of the class described, a positioning shaft, a dial relatively to which said positioning shaft is rotated, an adjusting arm mounted for free rotation about the axis of said shaft, an operating arm secured to said shaft for rotating said shaft, a stud secured block extending upwardly from said adjusting arm, a stud secured block extending upwardly from said operating arm, calibrated screw threaded means extending between said blocks for securing said adjusting arm to said operating arm whereby rotation of said adjusting arm rotates said shaft through the intermediary of said operating arm, detent means for fastening said adjusting arm to said dial, and said calibrated screw threaded means determining the positioning of said operating arm relatively to said adjusting arm and thereby the degree of rotation of said shaft relatively to said dial by said calibrated screw threaded means.

WINFIELD S. KLINGENBERG.

REFERENCES CITED The following references are of record in the Number Name Date 273,451 Brainard Mar. 6, 1883 1,391,016 Slider et a1 Sept. 20, 1921 1,592,700 McDougal July 13, 1926 1,879,941 McCabe Sept. 27, 1932 2,012,859 Vocke Aug. 27, 1935 2,136,958 Tyson Nov, 15, 1938 2,228,583 Parsons Jan. 14, 1941 2,357,329 Hansen Sept. 5, 1944 2,439,102 Rothweiler Apr, 6, 1948 2,452,544 Brodie Nov. 2, 1948 2,463,649 Sheflield Mar. 8, 1949 2,467,899 Lowkrantz Apr. 19, 1949