US282870A - Glass-blowing apparatus - Google Patents

Description

(No Model.)

. A. L. ELIEL.

GLASS BLOWING APPARATUS.

No. 282,870. Patented Aug. 7, 1883.

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INITED STATES PATENT O 'EricaI ALBERT L. ELIEL, or LA SALLE, ILLINOIS, AssIeNoB or ONE-HALE rro .IAcoB HoELLE, oE-sAME PLACE. f

GLAsshBLowlNG APPARATUS'.

SPECIFICATION forming part of Letters PatentNo. 282,870, dated August 7, 1883.

Application filed October 13. 1882. (No model.)

To all whom z'my concern:

Be it known that I, ALBERT LEB ELIEL, of La Salle, in the county of La Salle and State of Illinois, have invented certain new and useful Improvements in Glass-Blowing Pipes, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification. K

This is an improvement on the blowing pipes or irons 7 used by glass-blowers. It contains means for use by the mouth, valves to check a return air-current and to allow the same to pass when required, and an air-pump for mechanical blowing.

Figure 1 is alongitudinal axial section with the parts in position for use by the mouth in forcing air through the instrument. (A part of the tubular piston-rod is shown in side view.) Fig. 2 is an axial section part in side view, parts in position for mechanical blowing. Fig.

3 is a detail section with the lower check-valve` closed and the thumbwalve partly open to allow the entrance of air beneath the piston. Fig. 4is aperspective view of the mouth-piece, enlarged. Fig. 5 is a transverse section at 5 '5, Fig. l. Fig. 6 is a transverse section at 6 6, Fig. l. Fig. 7 is a transverse section. Fig.

8 is a transverse 'section of the stem of the -ting a mouth-piece, B, that constitutes thev stein of a valve, C, closing against a seat, C,

above, the mouth-piece having endwise Inove-v ment in its bearing. The mouth-piece is tubular from the outer end to the lateral holes b, through which the breath of the operator escapes into the valve-chamber when the valve C is open-in fact the pressure of the air issuing through the holes b tends to keep the valve open.

c is a guide-stem working through a guideplate, c, having an annular series'of perforations for the downward passage of air.

cZ is a spiral spring, whose ends bear against the valve-disk C and the guide-plate c', tending to close the valve, Vlout giving way easily under the pressure of the breath and the lips turning inthe cylinder by any suitable means.

For this purpose I show a screw, G, whose end entersV a longitudinal groove in the side of the piston-rod. (See Fig. 6.) The piston has packing e, working air-tight in the cylinder F. I show it" consisting of metal packing-rings of usual construction. The piston-rod D has a central bore, d, from end to end, so that the air passes downward from the mouth-piece to the part of the cylinder below the piston. To the lower end of the cylinder is attached the valve-piece II, consisting of two parts, h and h, screwed together. To the lower end of the piece H is attached the lower end or section, I, of the instrument.

J is a check-valve to prevent the return of air from the interior of the glass vessel u nder construction to the cylinder. This valve closes upwardly against a seat, j, being held up by a light spiral spring, j.

J is the guide-stein working in a socket in the metal beneath. rIhe Socket is surrounded by air-holes jg, forming communication between the valve-chamber h2 and the bore'of part I.

K is a valve seated at 7c.

k is the guide-stem of this valve, surrounded by a spiral spring, k2, acting to hold Iche valve against its seat. The valve K has a stem, K, with ribs k3, bearing against the sides of the valve-port H', the air passing freely through the grooves between the ribs when the valve is open. One of these ribs iits in a groove or seat in the side of the port to prevent the stem K from turning.

K2 is a thumb-knob by which the valve may be' forced inward to open it.

Lis an inclined lug upon the valve K, which, by the inward movement of said valve, .is

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. thus open it.

brought in contact with a boss, l, upon the valve J, to force the valve J downward and The valve K opens as the piston is drawn upward and allows the entrance of air beneath it, the valve C also being capable of performing the same office. Operation: Under this head will be described the useof the instrument when blowing with the human lungs, and then when blowing by mechanical means. In the first the piston is at the bottom of the cylinder and kept there as long as theblowing with the lungs continues. (See Fig. 1.) The valve Gis opened by the pressure of the lips upon the mouth-piece B. On the removal ofthe mouth the valve C closes andprevents the escape of air. Thus the usual way of stopping` with the thumb, after the escape of some air, is avoided, as the close of the valve is instantaneous and prevents all loss of air and partial collapse of the vessel under formation. 'Ihe current of air is shown by arrows. If a partial vacuum should form inside thevesselunder construction, the pressure of the air from without will open the valve K and admit air. When it is desired to allow the escape of air from the interior, the valve K is forced inward and the lug L thereon opens the valve J, thus allowing said air to escape. In blowing by mechanical means the piston is pulled upward in the cylinder, the valves4 C and K opening by the pressure of air from without and allowing the air to fill the cylinder beneath the piston, the valve J being closed. On the piston being pushed downward in the cylinder the valves C and K close and the valve J opens, allowing the air to pass into the pipe I and the glass vessel under formation.

I claim the following advantages: Time and labor are saved, as there is no escape of air 4o through the mouth-piece. `Injurious strain of the lungs is avoided, and a person of weak lungs can perform blowing operations that can, with the common blowing-iron, only be performed by persons with powerful llungs.

I claim as my invention- 1. The combination, in a glass-blowing pipe, of a piston and cylinder and induction and eduction valves, for the purpose set forth. l

2. The combination, in a glass-blowing pipe, of induction-valve C, hollow piston-rod and piston and check-valve J, substantially as and for the purpose set forth.

3. In a pipe for glass-blowing, a movable mouth-piece combined with acheck-valve con- 5 5 structed to open by the inward movement of l the mouth-piece.

4. In a pipe for glass-blowing, a movable mouth-piece closed at the inner end and working snugly in a socket, said mouth-piece having side ports, b, carried beneath the inner end of the socket by the inward movement of the mouth-piece.

5. The combination, with a pipe for glassblowing, provided with a check-valve to prevent the escape of air through the receiving end of the pipe, of a spring-Valve, K, allowing the escape of air from the pipe, for the purposes set forth.

' 6. The combination, with thc valve K, hav- 7o ing an inclined' lug, L, of the spring check- Valve J, with boss Z, for the purpose set forth.`

ALBERT L. ELIEL.

Witnesses:

GEORGE W. GERE, JOHN XV. HILL.

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