US1609640A - Syringe - Google Patents

Description

F. E. BELL ET AL SYRINGE Filed April 20. 1925 FEEDER/@K 5 BEL/ @EX HA/ems.

3% @Arm/VV 61H0: new

Patented Dec. 7, 1926.

,Unirse STATES Para NT je lice,

f sYsINeE- .Application ledilflpril 20, 192,5. f Serial N'o. 24,358.

Uur :invention relatesto syringes, particularly to curved syringes.

Heretofore longitudinally curved syringes hare been made with longitudinally curved bores, the vbores being concentric with the circular outlines ofthe cross-sections of the barrels. This construction necessitated-maliv ing .the plungerrods curved to-contforn'i Avith the curves o the bores oi' the barrels. The plungers of. syringes olthis class were -made oi 4'ordinary lstraight construct-ion causing poor Vseating against or engagement -vv-ith the walls orming the bores of the barrels. `With this construction also, the plungersand plimgerv rods were required to `be positioned into the bores rin a vcertain "manner vto preventV binding of* the plunger rods againstthe 4removable heads or caps or distortingo-the yieldable plungers and/,ofthe plunger-rods 'The objects of our invention are: First,

to provide a longitudinally-curved'syringe barrel .having `straight bore extending therein *from vone fendthereof and adapted to receive a plunger having a-straight plung- 25 er rod with which it may be easily assembled and hereby the usual binding or cramping of the plunger and plunger rod in syringes olf this class is reduced to a minimum; second, to provide a syringe having a lilling opening in the wall of its barrel near the removable cap end thereof, whereby the barrel may be ill'ed Witho-ut removing the cap at the normallyV open end thereol and without the provision of considerable auxiliary apparatus; third, to provide a syringe having` a filling opening in the wall of its barrel near the normally open endY there- 0I", whereby the barrel may be readily charged with plastic substances Without removing the removable cap from the normally openend of the barrel; fourth, to provide as a whole a novelly constructed syringe, and fifth, to provide a syringe of this class which is particularly simple and economical of construction proportionate to its functions, durable, and which will not readily deteriorate or get out oi order.

With these and other objects in view, as will appear hereinafter, our invention consists of cert-ain novel features of construction, combination and arrangement of parts and portions, as will be hereinafter described in detail and particularly set forth in the appended claims, reference being had to the accompanying drawings -alndfto the characters of lreference--thereon, which Aform a part oi'- this application, in which:

Figure l is a fragmentary .s'i'dewiew -of oursyr-inge; lligisay longitndinalfseetional Vview-thereof, takenthrough 2-2 of fITig. l, showing certain parts and portions thereo'' v vin elevation to facilitate the j illustration, and Figs. 3 and 4 iare transverse sectional views thereof, taken V.respectively through and 4 4 of [Fig. 2.

'Like characters ofreerence-refer to similar Vparts and i portions throughout -the sever 2 may be of any suitable construction,A

such as a pair of oppositely disposed, cupped leather or rubber washers, as shown in Fig. 2. The externally threaded open end p0rtion of the barrel Vl is concentric with the bore la and the rod 3, thus requiring no `particular skill in securing the cap 4 to the open end of the barrel.

In the Wall of the barrel l and near the open end thereof is provided a illing'opening l, providing an opening at all times from the outside to the interior of the barrel. lThis opening' lc is spaced from the open end of the barrel a distance slightly greater than the thickness 0l' the plunger 2, so that Y the barrel may be readily filled Without interference. This filling opening lC permits the barrel to be lilled without removing theY cap 4 from the open end of the barrel, as is usually done in syringes now in use; and the opening lc provides a far simpler means of filling the barrel Without removing the cap 4 than other cumbersome apparatus 110W in use for this purpose. The illing opening 1 near the normally open end of the barrel also permit plastic substances to be discharged into the barrel from tubes, as shown by dotted lines in Fig. 2, Without removing the Cap 4.

Though We have shown and described a particular construction, combination and arrangement ot' parts and portions, We do not Wish to be limited to this particular construction, combination and arrangement, but desire to include in the scope ot our invention the construction, combination and arrangement substantially as set torth in the appended claims.

Having thus described our invention, what rWe claim as new and desire to secure by Letters Patent is:

l. In a syringe structure, a longitudinally curved barrel provided with a substantially straight bore.

Q. In a syringe structure, a longitudinally Curved barrel provided with a substantially straight bore extending therein from one end thereof to near the opposite end of said burrel and communicating With the outer side of said opposite end through a small discharge opening.

3. In a curved syringe structure, a longitudinally curved barrel provided with a straight bore extending therein from one end thereof to near the opposite end, a cap for the open end ot said barrel, a yieldable plunger reciprocally mounted in the bore ot said barrel, and a straight plunger rod secured to said plunger and extending through said cap.

11. In a syringe structure, a longitudinally curved barrel provided With a substantially straight bore extending therein trom one end thereof to near the opposite end of said barrel and communicating with the outer side oit said opposite end through a small discharge opening, the open end of said barrel being externally threaded and concentricy with the bore of the barrel, a cap positioned over the open end ot said barrel, said cap being provided with a central hole concentric With the bore ot' the barrel, a straight, substantially rigid plunger rod extending through the hole in said cap, and a plunger secured to the one end ot said rod and reeiprocally mounted in said barrel.

5. In a syringe structure, a longitudinally curved barrel having a corresponding longitudinally curved axis and provided with a .straight bore having a discharge opening at its one end.

6. In a syringe structure, a longitudinally curved barrel having a corresponding longitudinally curved axis and provided With a sti-ight hore having a discharge opening at its one end, and a plunger reciprocally mounted Within the bore of said barrel and provided with a straight, substantially rigid plunger rod extending beyond the opposite end ot said bore.

In testimony whereof, We have hereunto set our hands at San Diego, California,

this ath day ot April, 1925.

FREDERICK E. BELL. REX HARRIS.

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