US 554614 A
Description (OCR text may contain errors)
UNITED STATES ATENT FFICE.
RICHARD BEYER, OF BERLIN, GERMANY.
SPECIFICATION forming part of Letters Patent No. 554,614, dated February 11, 1896. Application led May 3l, 1895. Serial No. 551,268. (No model.) Patented in Germany October 25, 1894,1To. 81,613.
.To all whom it may concern,.-
Be it known that I, RICHARD BEYER, pharmacist, a citizen of the Kingdom of Prussia,
tagious germs, else easily possible by immerging the injection-nozzle after an injection into the medicament.
In the accompanying drawings, Figure 1 is a vertical central section of such a syringe; Fig. 2, a valve put into it.
The syringe consists of a cylinder a, above whose nozzle b is put a valve g, forming an elastic body perforated by a slit m. Above the top of .this valve-body there is a socket c,
prolonged by an elastic tube d. The piston c and its rod f have a hollow axis, and to the top of f is also put off an elastic tube CZ. In order to iill the syringe, the bore of f is shut by squeezing the tube d with the iingers, the tube d is immerged into the vessel containing the fluid to be injected, and by raising the rod f the liquid enters the syringe through the socket c. In the same time by atmospheric pressure the valve g and the slit m are closed. If now the piston c is pressed downward, the liquid is prevented from escaping there and takes it away through the valve g now opened and through the nozzle b.
For the manipulation as described a hollow piston and rod are properly not required and these parts could also be full ones; but for female patients, for injections into female genitals, it is more advantageous to have a hollow rod. The syringe is here lled by immerging the tube d' into the liquid. If the piston is raised while the socket d is squeezed, the liquid is sucked into the cylinder through the pipe d and the injection is made by pressing down the piston c. A return valve in CZ prevents the escape of the liquid through this tube. The syringe shown in the drawings would be applicable for each case, for masculine and also for female patients, but could, by providing a full or a hollow piston and reciproeately adding or leaving the socket d, be confined to the one or the other use. For the full piston could also bel substituted a hollow elastic bulb directly above the suctionpipe d or fixed to the socket c.
Vhat I claim is- An injection-syringe consisting of a cylinder into which, above the nozzle b is put a downward opening valve g and having a hollow pistone, a hollow rod f and, above the valve g, a lateral suction-pipe d, substantially as set forth.
In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.
CHAs. H. DUNN, YV M. HAUPT.