US2098548A - Hose jack - Google Patents

Description

L. J. Kick 2,098,548

HOSE JACK Nov. 9, 1937.

Filed Apri; 15, 1955 t `L Y Y ATTORNEY Patented Nov. 9, 1937 UNITED STATES PATENT OFFICE nosE JACK Louis J. Kick, Union city, Ng-J- Application April 15, 1936, Serial No. 74,463

3 Claims.

My invention relates to improvements in hose jacks.

One of the objects of my invention is to provide an improved construction fora hose jack which can bev applied quickly to a iire hose, for example, and operated with comparatively little eiort and by one man to completely stop the ow of water at very high pressures without necessitating shutting oii the' water at the pump. 1U Another object of my invention is to provide an improved hose jack of the character referred to which is relatively simple and rugged' in construction, and which has provisions for releasing the hose either gradually or quickly, as might be desired, so that the water under the high pressure again starts to flow under complete control ofthe single operator.

Another'object of my invention is to provide an improved hose jack' of the character referred towhich is safe in every respect for use particularly in handling fire hose under any conditions which might arise, and which is relatively light and easily carried from one place to another and used without.- dii'culty.

Other objects and advantagesv will hereinafter appear.

For` the purpose of illustrating my invention, an embodiment thereof is shown in the drawing, wherein Figure 1 is a side elevational view, partly in section, of a hose jack constructed and operating in accordance with my invention, the section being taken on the line I-I in Fig. 2;

Fig. 2 is a sectional view, the section being taken on the line 2-2 in Fig. 1; and

Fig. 3 is a fragmentary View, partly in section, showing a modiiication- With reference to Figs. 1 and 2, my improved hose jack comprises a four-sided frame I comprising the opposite side members I2 iixed as represented to an end member I4, and a bar or bolt I6 inserted through registering openings I8 in the side members I2 to constitute the other end member of the frame.

A hydraulic jack unit, represented generally by the reference numeral 20, is disposed within the frame I0 and is supported on a base 22 which is guided by the side members I2 of the frame, for which purpose the base is provided with openings through which the members I2 pass with a free, sliding lit.

The hydraulic jack unit is of a conventional design, and in the present disclosure of an embodiment of my invention is shown as being of 55 the specic type used for hydraulic automobile jacks and known in the' trade as` Hy-Jacki and" manufactured by the Ero Manufacturing Com pany of Chicago, Illinois and Philadelphia, Penn` Sylvania.

Since the details of constructionand prin- 5' ciple or manner of operation of the hydraulicy jack unit 20 are well known to those skilled in the art, it is not believed to be necessary to discussi these in detail. For the present purpose, however, it can be said that the unit 20 comprises 10 a cylinder member 24 fixed to the base 2-2., and`- a plunger member 26 within the cylinder member; An auxiliary cylinder 28 and an associated plunger' 30, and a lever 32, all disposed and associatedwith respect to each other as shown, constitute: means I5 for pumping oil or other liquid into the cylinder' 24 between the respective adjacent ends of thev latter and the plunger 26. This forces the mem-r bers 24 and 26 apart to compress the hosel-be-f tween the end I6 of the frame andthe base 22; 2G-

In this way, the flow of Water through thehoseis`` entirely stopped, so that one nozzle might be substituted for another, or avr section of hoseV removed or inserted without necessitating shut ting oi the water at the pump'.

Hydraulic jack units of the general typel disclosed arev provided with valve means-designated generally by the reference nu'rrieral3li,y for relieve ing the pressure of the oil or other liquid to permit movement of the cylinder and plunger-mem- 30 bers 24 and 26 together. In operation, therefore, the operator can open the valve 36 gradually so that after the new connection or change has been made in the hose line, ilow of water "at the high pressure through the line can be restored 35 entirely under his control, and gradually.

It is proposed to provide tension springs 38, each connected at one end to the end member I4 and at its other end to the base 22, for the purpose of pulling the cylinder 24 and the base 22 40 upwardly to the full-line position shown when the valve 36 is opened to relieve the pressure.

In the modification shown in Fig. 3, instead of using the tension springs 38 for the purpose explained, compression springs 38a are disposed 45 on the side members I2 of the frame. In this construction, each of the springs 38a is enclosed and protected by a casing 40 fixed at its lower end to the base 22 and provided at its upper end with an inwardly extending ilange 42. 50

'Ihe springs 38a are compressed between the iianges 42 and collars 44 fixed on the frame members I2. During operation to compress a hose, therefore, the springs 38a are compressed, and operate when the valve 36 is opened to restore the 55 parts to their respective positions as shown in Fig. 1.

The jack can be placed quickly over a hose line at any point desired, and the bolt I6 put in place to complete the frame. With the valve 36 closed, and upon manipulation of the lever 32, the parts then function to compress the hose and completely stop the flow of water.

When not in use, the bolt I6 might be inserted into the hollow lever 32, as shown in dash-line, and heldl therein bymeans of a set screw 46.

It is proposed to secure the bolt I6 to the jack by a chain 48 so that it will not be lost.

From the foregoing it will be seen that I have provided an improved construction for a hose` jack which is reliable and relatively simple in construction and manner of operation,` and by which fire hose particularly can'be quickly compressed to completely shut off the flow vof water at high pressures without shutting off the water or reducing the pressure at the pump. Furthermore, it` will be seen that my improved jack can be operated easily by one man, and transported readily from one place to another and used under conditions which ordinarily would make it impossible to make a change of nozzles or break the line to insert or remove a hose section without shutting off the water at the pump.

It will be understood that various modifications such as4 in the size, shape and arrangement of theparts might be made without departing from the spirit ofmy invention or the scope of the claims.

I `claim as my invention: Y

1. A hose jack comprising a four-sided frame, a hydraulic jack unit disposed within said frame and comprising a base and a cylinder fixed thereto and a plunger withinisaid cylinder, said base engaging and being guided by the opposite side members offsaid frame, said plunger `being fixed with respect to an end of said frame, means associatedand moveable with said cylinder for pumping liquid into the cylinder between the respective adjacent ends of the latter and the plunger where- 45 by said cylinder is forced away from said end of said frame to compress the hose between the other end of said frame and said base, valve means associated and moveable with said cylinder for 2,098,548 if fz relieving the liquid pressure to permit movement of said cylinder and plunger together to release the hose, and tension spring means secured at one end thereof to said frame and at the other end thereof to said unit and operating to urge said cylinder toward said plunger.

2. A hose jack comprising a four-sided frame, a hydraulic jack unit disposed within said frame and comprising a base and a cylinder fixed thereto and a plunger within said cylinder, `said base engaging and being guided by the opposite side members of said frame, Ysaid plunger being xed with respect to an end of said frame, means for pumping liquid into the cylinder between the respective adjacent ends of the latter and the plunger 4whereby said cylinder is forced away from said end of said frame to compress the hose between the other fend of said frame and said base, valve. means for relieving the liquid pressure to permit movement of said cylinder and plunger together to release the hose, and two tension springs disposed respectively on opposite sides of said cylinder and each fixed at one end thereof to said frame end and each fixed at its other end to said base thus-operating to urge saidcylinder toward said plunger.V

3. A hose jack comprising a four-sided frame, a hydraulic jack unit disposed within said frame comprising a base slidably guided by the side` mem` bers of the frame, a cylinder member carried by -said base, ,a plunger member within said cylinder means for relieving the liquid pressure to permitV movementof said `members together to release the hose, and tension springs located on opposite sides of the cylinder so connected tothe base andthe frame as to urge said members toward each other.

LOUIS J. KICK;1

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