US1106682A - Suction-creating mechanism for vacuum cleaning apparatus. - Google Patents

Description

.J.SGHIRRA. SUCTION CREATING MECHANISM FOR VACUUM CLEANING APPARATUS.

APPLIGATION FILED APR. 17, 1912.

1 JfifififiQ. Patented Aug. 11, 19114,.

2 BHEETS-SHEET 1.

. WHTNESSES 0 M a M.

J. SCHIRRA. SUCTION CREATING MECHANISM FOR VACUUM CLEANING APPARATUS.

APPLIGATION FILED APR. 17, 1912. 1 1 g g, Patented Aug. 11, 1914.

2 SHEETS-SHEET 2.

I ATTORNEYS Juries scmnnn, or rrr'rsnumn,

PENNSYLVANIA, ASSIGNOR .TO HAND VACUUM SWEEPER COMPANY, OF IPiTTSBURGH, PENNSYLVAMA, A CORPORATION, OF PENN- -SYLVANIA.

SUCTION-CREATING MECHANISM FOR VACUUM CLEANING APPARATUS.

Specification of Letters Patent. Pflttgjmfljdi Aug, 11, 19114,,

Application filed April 17, 1912. Serial No. 691,484.

To all whom it may concern Be it known that I, JULIUs SoHrnnA, a citizen of theUnit-ed States of-Amerlca, re-

siding at Pittsburgh, in thecounty of Alle-y 'gheny and State of Pennsylvania, have. in-

vented certain new and useful Improve- 1-911, No. 1,008,205, the present invention latter construction 1s such as to ments in Suction-Creating Mechanism for Vacuum Cleaning Apparatus, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to iinprovementsin vacuum cleaning apparatus and relates more particularly to a cOIlStI'llCtlOdQf this type operated on the general principles set forth 1n the patent granted .to me November 14,;

1911, No.-1,008,865, in the provision of an apparatus which can be used as an attach. ment to a carpet sweeper or be used -lnde pendently thereof, either when attached to,

or entirely disconnected from the sweeper.

Inthe construction shown in the said pat ent, the suction providing element is'in the form of a'collapsible or bellows structure, the specific type of which isbest indicated in the patent granted 'to me November 7,

being shown as of the type disclosed in this patent, it being understood that. the be applicable for use in the manner indicated in either of these patents.

i which isv capable of use to roduce a suction Among the objects of my invention areto provide a construction which is substantially non-collapsible,,inwhich the sweeper handle forms 'asupport member of the suction device. reciprocates to. provide the suction action; toprovlde a novel form of movable member for the suc-' tiqn device; to provide a. novel form of ha dle-and support; to provide a structure in which. the handle may be attached .to'difterent-types of sweepers, to provide. a device in onefdirection only of t emovable member. of the device, orin both d1rect1ons of its movement; and to provide a construction whlch isattractive in. appearance, durable inconstruction, and which can be manufactured relatively low cost."

.o.:'these.and other ends, the nature of which will be readily understood as the invention hereina ter. disclosed, said invention consists in i the improved cons truction and combination of here nafiter fully form of my device,

on which the movable.

similar reference charactersindicate similar 7 parts in each of the views-Figure 1 is a central longitudinal sectional v1ew of one showing it applied to a suction nozzle. Fi 2 is a similar view showing the device a apted for use in providing a suction in both directions of movement of the movable member. Fig. 3 is a cross sectional view taken on the line IIIII][ of Fig. 1. Fig. 4 is a detail view of a portion of the handle and of the sleeve which coiiperates therewith. Fi 5 is a detail. view partly in section of the member of the suction device. Fig. 6 is a sectional view taken on the line VIVI of Fi 2 Fig. 7 is a detail view of the lower en of the-handle showing the manner in which the latter may be attached to a sweeper bail of the type having no threadsfor "engagement of the handle.

The apparatus indicated generally at 10 comprises a suction device 11,- a suction head 12,.and a dust receptacle 13, the head shown in the drawings being of the type disclosed in'the Patent No. 1,008,205 heretofore .referred to, it being understood, however that the form of head and the connection between it and the suction device may be of the type shown in the patent granted to me, N 0. 1,008,865 referred to. The dust receptacle is similar to thatshown in said patent, the principal variation from the disclosure of said patent bein in the form of the suction device itself, w ich, as shown in- Figs. 1

and 2 may be employed. in connection with movable either. an apparatus adapted to work in but F one direction of movement of the movable member or jn'both directions.

In the. present form of my device, employing that shown in Fi 1 as anexam le, I emplo a tubular mem er, 14, refera hly ofmeta although other materia s may be used, ,said member having its forward end closed by a cap 15 having an inlet port 16 and an outlet port 17, the forward face of ;-the cap being provided with nozzles 18, 18

theformer being adapted to receive the connection from the suction head, while the nozzle 18 is formed for the connection of the dust receptacle As shown, the ports '16 and 17 are controlled by suitable valves 19 properly located to provide the action necessary for the operation of the apparatus. The cap is also-provided with a central opening 20 through which the fori' ward end of the handle or support 21 extends, the handle havinga shoulder 22 which is adapted. to abut against the inner face of the cap to close the opening.

The handle or support 21 is preferably formed in three parts, the forward and rear portions being preferably of wood, these portions being connected by a sleeve 22 as shown in Figs. 1 and 2, this construction having the double purpose of strengthening the handle within the member 14 and also insuring that the portion of the handle on which the movable member travels is straight, limiting the liability of the parts becoming diflicnltto operate through-warping or other action of the handle. The rear of the tubular member may be closed by a cap 23, as shown in Fig. 1, or a closure 23" as shown in Fig. 2, the cap 23 being capable of being removed when desired.

The movable member shown in detail in Fig. 5 is in the form of a piston, comprising a hollow member 24 having an annular groove 25 adapted to receive a resilient packing preferably in the form of a tubular hose suction 26 resting withinthe groove and the outer covering 27 thereof, the latter being held in place by suitable securin means such as cords or threads 28. Extem ing axially through the member 24 is a tubular member 29, said member extending rcarwardly from the piston and being of a length to project from the cap 23 a suitable distance along the handle 21, said member 29 being adapted to'slide upon the handle and the sleeve 22 in providing reciprocations of the piston. If desired, suitable packing may be placed between the sleeve -..22 and the member 29 to reduce noise which might arise through the contact of the two metallic members 22 and 29 during the movements of I the piston in the casing or cylinder 14. To

prevent leakage, suitable pa-c ing 30 may be carried'by the ca 23 or 23, the'forward end of the ban is is preferably screw-' threaded to. permit of itsattachment to the complemental threads of a bail of a carpet sweeper. Since, however, some types of sweepers do not have 'the particular type of fastener provided by the threads, I preferably provide a- .screw-threaded opening leading axially from the forward end of the handle, this opening, designated at 31 in Fig. 7, being adapted to receive a suitable member 32, such as a screw which, as shown in Fig. 7, acts to secure the handle to the hail of the sweeper. 4

p The general action of the apparatus shown in Fig. 1 is similar .to that shown in the patents referred to, viz: A relative movement 21 in a manner similar to that employed in Fig.

of the handle 21 and the member 29 in the direction of length of the handle provides the suction action or the discharge action depending upon the direction in which this movement is had. Where the device is carried by the sweeper and cooperates therewith, such relative movement may be obtained by simply holding the member 29 against movement and operating the handle 7 5 moving the sweeper over the carpet, this action causing the cylinder or casing to travel with the sweeper while the piston remains stationary with respect to the operator, the effect being, however, to provide the relative movement of handle and member 29. Obviously, if the member 29 is not held, the movements of the handle will simply operate the sweeper without providing any suction efi'ect. Where 'the device is employed with the suction head alone, as in 1, a similar action in moving the head over the floor and holding the member 29 stationary will provide the suction efiect, or a retaining of the handle stationary with a movement of the member 29 will cause the suction effect to be provided while the head remains at a fixed point; in'either instance therelative movement of these two parts is provided.

In Fig. 2 I-have shown a somewhat simi lar apparatus designed for a suction action in both directions of relative reciprocation of the cylinder and piston. In this form, both caps 15 and 23 are provided with the ported openings, a passageway 33 connecting the suction head with the rear of the cylinder, and the passageway 34 leading from such cylinder rear end to the dust collector.

In operation, the forward movement of the piston in the cylinder acts to draw the dust ractically through the suction head and t e passageway 33 into the cylinder in rear of the piston, at the same time driving the dust particles in front of the piston 1nto the dust collector. A succeeding movement of the piston in the opposite direction closesthe entrance to the passageway 33 and opens that to the passageway 34, resulting in dis-- charging the dust particles from the rear of the piston into the dust collector and drawing in the dust particles from the suction head into the space in front of the piston, providing a continuous suction whenever 120 relative movement is had between the member 29 and the handle. J y

The advantages of the construction herein disclosed are readily perceived. The-piston is guided both by t e casing 14 and the handle through the member 29, insuring a smooth movement of thepiston through the casing with the'requirement of a minimum amount of power regardless of the'particular direction in which the pressure is .ap-

plied, the particular structure of the packing of the piston serving to cause the piston to operate with the maximum effect; by the particular construction of the handle, this effect is increased, since the binding of handle and member is practically eliminated.

As Will be obvious, the device is one which is of relatively low cost in manufacture, at the same time providing for maximum efiiciency, durabilit and simplicity.

While I have herein shown and described several ways in which y invention will be carried into effect, it Wi ,be readily understood that changes and modifications therein maybe desired or required to meet the exiencies of particular usage, and I desire it to e understood that I reserve the right to make any and all such changes and modifications therein as may be so required or desired, in so far as the same may fall Within the spirit and scope of the invention as eX-' pressed in the accompanying claims.

Having thus described my-invention, What I claim as new is 1. In vacuum cleaning apparatus, a handle, a sleeve carried by and movable longitudinally of the handle and having a piston thereon at approximately its forward end, and a cylinder of substantially fixed dimensions secured at its forward end to said handle, and having its rear end mounted on said sleeve in rear of the piston, said piston and cylinder cooperating to provide a suction-creating device upon relative reciprocation of handle and sleeve, said sleeve extending axially of and through the rear end of the cylinder and being movable relatively to such end.

2. In vacuum cleaning apparatus, a bandle, a sleeve carried by and movable longitudinally of the handle and having a piston thereon approximate its forward end, and a cylinder of substantially fixed dimensions secured at its forward end to said handle and having its rear end mounted on said sleeve in rear of the piston, said piston and cylinder cooperating to provide a suction-creating device upon relative reciprocation of handle and sleeve, said sleeve extending axially of and through the rear end of the cylinder and being movable relatively to such end, said handle having a tubular portion intermediate its ends and forming a guide to retain the axial alinement of the piston.

3. In vacuum cleaning apparatus, a bandle, a sleeve carried by and movable longitudinally of the handle and having a piston thereon approximate its forward end, and a cylinder of substantially fixed dimensions secured at its forward end to said handle and having its rear end mounted on said sleeve in rear of the piston, said piston and cylinder cooperating to rovide a suction-creating device upon rdlative reciprocation of handle and sleeve, said sleeve extending axially of and through the rear end of the cylinder and being movable relatively to such end, said handle having a tubular por tion intermediate its ends and forming a guide to retain the axial alinement of the piston, the length of said tubular portion being substantially equal to the length of travel of the'piston.

4. In vacuum cleaning apparatus, a bandle, a sleeve carried by and movable longitudinally of the handle and having a piston thereon approximate its forward end, and a cylinder of substantially fixed dimensions secured at its forward end-to said handle and having its rear end mounted on said sleeve in rear of the piston, said piston and cylin der cooperating to provide asuction-creating device upon relative reciprocation of handle and sleeve, said sleeve extending axially of and through the rear end of the cylinder and being movable relatively to such end, said piston having a peripheral yielding packing including a resilient tubular member.

In testimony whereof I aflix my signature in the presence of two witnesses.

JULIUS SOHIRRA.

Witnesses:

-MAX H. SROLOVITZ, HORACE G. SEITZ.

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