UCSF Medical Center - Medi Cal Yearbook (San Francisco, CA)

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TRANS-SPEED HI-SPEED NEEDLE BALL BEARING HANDPIECE No. 10 WITH 8 l1eW Higher 1 a more 1 the Midwest Embodying once and the open the WHAT IT IS: The Midwest TRANS-SPEED is an efficient speed multiplier, mounted on the ii'l0 Hi-Speed Hondpiece delivering higher usable speed than previously obtained by any other means. HOW IT WORKS: Speed is multiplied al the hand- piece by the mechanical ratio of a small idler, driven by the cord, and transmitting energy at high speed to the hondpiece spindle alone. TRANSMISSION FUR HIGH SPEED HIINDPIECES increases handpiece speed at the spindle . . . with no speed increase in idler pulleys on engine arm WHY IT WORKS Higher speed is delivered to the cutting surface because energy is conserved in a slow moving belt and pulley system, result- ing in an increase in rotational energy ot the spindle. WITH THESE MATCHED gl? ANGULAR ATTACHMENTS COMPLETE YOUR HI-SPEED CONVERSION A ' , fd?-'I I llnirgriglglgfzhtl , ' is Hr-svesn BALL BEARING coNnzA ANGLE-N RN LONG snsmu TYPE Pon LATCH suns '31 .Y 's-- ., , W ,aj ' f'f'5's'5':'f r' I I '.1'2.,, iii: I r. ' ..., . MOTOR RATING ACTUAL HANDPIECE IRITTERI MOTOR SPEED SPEED 4 500 RPM 5 000 RPM 20000 RPM I70 ohm resistancel HI-SPEED BALL BEARING CONTRA ANGLE T-N FOR TAPERED SHANK BURS 6 500 RPM 8 500 RPM 31 000 RPM U75 ohm resistoncel I250 ohm resistoncel lOpen resistancel I I I i Peak RPM 11,000 RPM 141,000 RPM i handpiece speed. Handpiecc speed will vary depending on the type and condition of the motor motor pulley size and the ohms resistance used MIDWEST DENTAL MFG CO 4439 W MOTOR RATING ACTUAL HANDPIECE IS. S. WHITE l MOTOR SPEED SPEED 4,soo RPM 4,600 RPM 24,ooo RPM 4,soo RPM 6,700 RPM 33,000 RPM 'If a 2V4 diameter motor pulley is used, add 1579 to 1 -L. n'! Rice Sl Chicago 51 III is

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Best W'isloes fo our Medical Center Friends BARNES-NIND PHARMACY 430 POST STREET GARFIELD I-'I895 FRANK O. FRISCH, 1936 HARRY W. HIND, 1939 WILLIAM W. CLARK, 1943 WILBUR B. HOLDEN, 1948 IVAN SZEKELY, 1951 JACK M. QUICK, 1954 I I n Military Ser-vicej DEWEY BROWN, 195 5 Congratulations to the Class of '56 Our most sincere wishes for your success in your profession and in the everyday joys of living. May it be our privilege to serve you and supply you with THE BEST GOLDS for GOOD DENTISTRY THE WILKINSON COMPANY I547 FourIh STFBGI 0 P.O. Box 303 San'Ia Monica, California A FEW WORDS ABOUT . COLUMBIA From a humble slari 36 years ago, Colum- bia Denioiorms have played an increasingly imporfani' role in clenIal eclucafion. Today, every denial s+udenI in Ihe UniIed Sraies and Canada cuIs his iirsf 'reeih on Colum- bia Denioiorms, for we supply Denfoiorms rc every denial college in The Uniied Siaies and Canada, as well as many ofher lands. In Ihese 36 years, Ihere have been many improvemenfs and adcliiions Io Den+oIorms DENTOFORMS Io meei Ihe ever more exaciing demands of Teachers. Today, Denfoforms number more Ihan a Ihousancl and presenI concli+ions Ihai Ihe siudenlr will encounfer in pracirice. And in graduaie years, Denioiorms coniinue 'ro help clinicians in posI'graduaIe educaiion and Io help I'he busy pracIi'rioner in his endless Iaslc of paiieni-educaiion by showing Ihe be++er den+isfry he seeks 'ro give. USE COLUMBIA DENTOFORMS AS AIDS IN YOUR PRACTICE WRITE FOR A COPY OF CATALOG No. 33 Columbia Dentoform Corporation The H ouse of a Thousand Models I3l Easi 23rcl SI'reeI New York IO, N. Y.