US1173251A - Needle-setter. - Google Patents

Description

F. A. CHAPIN.

NEEDLE SETTER.

APPLICATION FILED SEPT. 4. 1914.

Patenwd Feh29, 1916.

i wa gme @JUH-n ems co to the invention in connection platform 2 immune-serene.

Specification of Letters Itatent.

pplicetion filed September d, 192 Serial No. 860,127.

To all whom it may concern:

Be it known that l, FREDERICK A. Crmrrlv, a citizen of the United Statesof America. esiding at Toledo, @hio, have invented new useful Needle-Setters, of which the folowing is a specification.

This invention relates to means for positioning a member for coaction with another member for subsequent relative travel therebetween.

This invention has utility when incorporated in connection with "reproducing mechanisms, especially sound reproducers of the dish record type.

Referring to the drawings: Figure 1 isa perspective view of an embodiment of the with a disk record sound reproducer; Fig. 2 is a longitudinal section, on an enlarged scale, of features of the device of the invention; and Fig. 3is a side elevation of the device, adjusted for use in connection with a different diameter record than the showing in Fig. 1, with a fragment of the machine shown.

The sound reproducing machine may embody the main frame 1 having mounted thereon the rotatable platform 2 for. supporting: the (113i; record 3 having ad acent the outer periphery a non-reproducing portion t, and surrounded by this non-reproducing; pc tion 4 a'reproducing portion 5.

Cerriedhy the frame 1 is the bracket 6 upon which is mounted the arm? pivoted to swing across the face of the record 3. ice free end of the arm 7 carriesthe sound box 8 in which is mounted the needle 9 disposed to rest upon or contact the record 3 for sound reproduction by 'relative travel in the grooves or sound reproducing PQP tion of the record 8. i The device of the invention is disposed for limiting the swing of the arm 7 in bringing the needle 9 into starting position. This swing of the arm 7 is with the sound box 8 so turned that the needle is free of the record 3. s Vhen the swing of the arm 7 is in the region of the periphery of the record 8, the needle is swung downward into record contacting position. after the record is under speed. This setting of the needle should be accurately. done in the outermost groove in a1 easy manner to avoid in ury core. t d on the frame 1 adjacent the is the support for up it having the transversely perforate ,wardly spun lip 16 behind the rib ii" head 11 provided with a se' screw 12 justable to engage the tube 13 hat therein the compression spring ilretain' by the head held thereon by the in on the end of the tube. 13. The collar 18 l mits the inward travel of the head 15 by the lip 16 coacting therewith. The compress on of the spring Lland therefore, its tive strength may .beadjustedby the screw 19in the tube 13, while the plug 20 may be inserted in the open end of the tube 13 to cause it to present a more sightly appearance.

in positioning the upright 10, the arm 7 maybe swung to such position that the needle 9 when dropped to position will fall just inside the periphery of the smaller, if there he variation in diameter. of or maximum size, records for which the platform T2 is designed. The upright is then placed so that the collar 21 on the tube 13 abuts the head 11, and the set screw 12, is rotated to loch the member 13 in this position, with the head 15 compressing" spring 14 and contacting or coacting with some movable part of the pivoted or swinging members. as the arm i'.

To operate the device, the machine is started in the usual way, and then the arm swung over to abut the buffer head 15 and compress the spring 1%. The needle 9 is then permit-ted to contact the record per tion t, and the yieldable member 15 at once gently comes into action to shift the needle 9 across the non-reproducing portion 4: of the record member 3 into the outermost reproducing groove, so that reproduction begins at once.- The great advantage of the device is that the setting may be accomplished quickly with any change of records of the taken general size and without the least study or eye strain for locating the point or scratching the record by manually forcing the needle thereon. It will he thus -se en,' wi hout any illumination whatever,

the needle may i be set for reproduction. With nicety in spring adjustment, the shifting' of the buffer head 15 may just overcome the resistance of the arm 7 which is very slight during the rotation of the record, and

the full the needle resting thereon. The length of the section 22 between the ribs 17, It; may be in excess of the maximum variation of thenon-reproducmg portions 4, or approximating such variation, and the actual shift ing may be such that inthe quiet travel of the-needle 9 to the outermost groove, the impetus given is just suflicient to free the arm 7 from the head 15 as the outermost groove is entered by the needle. This adjustment with the light weight spring 14 is readily possible.

In instances Where a smaller standard record is used, say from a 12 to a 10 size, the smallerrecord 23 (Fig. 3) is spaced inward more from the upright 10, but as the same general range of conditions are to be found here, there need not be re-adjustment of the spring ll, nor a resetting of the upright 10. The set screw 12 may be loosened and the tube 13 thrust inward to bring the needle 9 within the periphery of the smallest of the standard 10 records, and then a collar 24 rotated up to position to abut the head 11, Where it may be locked by a set screw 25, whilethe' tube 13 is held there by the set screw 12.

With the positioning of the standard 10 bringing the collar 9.1 into play there is a ready adjustment for determining limiting position for locking the tube 13 by the set screw 12 for one range of records. Even While the operator is getting the disk under speed for swinging the needle down into position, shifting of the adjustment by loosening the set screw 12, may occur to bring the collar 21 or the collar 2st into contacting position with the head 11, to provide for the automatic needle setting or shifting as the general standard size of the disk may require. The handling is not difficult, and the device is simple, reliable and ornamental, as well as of material assistance in the proper machine operation.

What is claimed and it is desired to secure by Letters Patent is:

1. A setting device for sound reproducers including a relatively fixed element, member slidably mounted therein, a head mounted on and for independent sliding movement relatively to the member, and a spring arrarged Within the member and resisting sliding movement of the head.

2. A setting device for sound reprodncers .including a fixed upr1ght, a tube slidably mounted in the upright, a head slidably mounted on the tube, a'spring arranged Within the tube and resisting sliding movement of the head in one direction, and means carried by the tube to limit its sliding adjustment in the upright. I

3. A setting device for sound reproducers including a fixed upright, a tube slidably mounted in the upright, a head slidably mounted on the tube, a spring arranged Within the tube and resisting sliding movement of the head in one direction, a fixed stop carried by the tube to limit movement of the tube in the upright in one direction, and a second stop adjustably carried by the tube to limit movement of the tube in the upright in the opposite direction.

In testimony whereof I atliX my signature in the presence of tWo Witnesses.

FREDERICK A. GHAPIN.

lVitnesses Gno. E. KIRK, GLADYS Jameson.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 01 Eatents, Washington, D. C.

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