US2271527A

US2271527A - Dual sash weight

Info

Publication number: US2271527A
Application number: US352178A
Authority: US
Inventors: Cortez E Peck
Original assignee: Individual
Current assignee: Individual
Priority date: 1940-08-12
Filing date: 1940-08-12
Publication date: 1942-02-03
Anticipated expiration: 1959-02-03

Description

Feb. 3, 1942.

C. E. PE CK DUAL SASH WEIGHT Filed Aug. 12, 1940 INVENTOR. A11A6.QQ4-90.

ATTORNEY.

. I l l l l I I I I l I l t I l I l I l l l l l l I I 1 x i I I l I 1 I u l l A I l Patented Feb. 3, 1942 UNITED STATES PATENT OFFICE 2,271,527 I DUAL SASH WEIGHT Gortez E. Peck, Dallas, Tex. Application August 12, 1940, Serial No. 352,178

2 Claims.

This invention relates to a window counterbalance construction and more particularly to a novel sash weight assembly which is utilized in such manner that a pair of such assemblies balance the weight of a pair of sashes so that such sashes may be readily moved and will remain in any desired position between the fully opened or the fully closed position.

An object of the invention is to provide a construction whereby a pair of sashes may be fully counterbalanced by a single pair of sash weights.

Another object is to provide a construction whereby the wear upon a sash cord is distributed throughout the length of such cord.

Another object is to provide a sash weight which is simple and which is also inexpensive to construct. v I

Still another object is to provide a sash weight having at its upper end a helical supporting loop adapted to threadably enter an eye in a supporting member.

Another object is to provide a sash weight having a supporting loop to which attachment is made in a manner to be non-releasable when the weight is installed within the weight passage of the window frame.

Still another object is to provide a sash weight which is cast of cementitious material and which is provided with a plurality of elongated peripheral beads which serve to minimize the areal contact of the weight with the walls of the weight passage in a window frame.

The foregoing objects will, together with other objects, become more fully apparent from the following description taken'in connection with ing the desired connection between the sash weight and the support therefor.

While the sash Weight constituting an element of the present invention is illustrated in the accompanying drawing as utilized within a window frame to counterbalance the weight of the sashes of a Window, it is to be understood that such element; of the invention is of general utility and may be used for any analogous purposes where a counterbalance weight is desired. In the drawingthe numeral I refers generally to a window frame in which are mounted upper and

lower sashes

2 and 3, each of such sashes being movable vertically "to control the window opening. p

' In order to make the sashes readily movable manually and to cause such sashes to remain in desired positions to which they are moved, counterbalance means is provided including a weight assembly generally referred to as it) including a mass I I and a sheave I2 attached to such mass at itsupper end. A sash cord 4 passes-beneath the sheave I2 and flights Sand 6 of such cord pass upwardly therefrom and over the sash pulleys 1 and 8 secured within the frame I. The ends of the cord 4 are attached respectively to the

sashes

2 and 3 as indicated at 9 and 9.

It .is to be noted that in accordance with the foregoing description the weight assembly I0 is instrumental in providing the desired counterbalancing of both of the

sashes

2 and 3 and hence a single pair of the counterbalance assemblies may be utilized instead of a pair of sash weights for each of the

sashes

2 and 3. Accordingly the number of sash weight assemblies necessary is reduced by one-half. The construction also has the advantage in distributing the wear upon the sash cord 4 since difficulty has previously been experienced with abrasion of the sash cord where such cord is attached to the weight member. Through the use of the sheave I 2 the apparent point of attachment of the cord to the weight depends at any time upon the relative positions of the

sashes

2 and 3.

The weight II is a composite cast construction comprising a container 20 of suitable material such as galvanized sheet metal or any of the noncorrodible sheet metals now available on the market. This container is provided with a plurality of beads 2| extending lengthwise of its outer surface, such beads being designed to provide a small area of contact of the weight member I I with the inner walls of the weight passage I3 in the window casing I.

The container 20 is formed from a single sheet of material and is closed by means of the folded and crimped seam 22 positioned at a desirable location on the periphery thereof. This seam is formed by providing a reverse bend I9 adjacent one end of the sheet metal. The opposite end of the sheet is displaced inwardly at I8 and adjacent thereto is provided with the reverse bend I I so that the edge fits within the channel formed by the reverse bend l9. This construction is such as to provide a. smooth outer surface yet at the same time a metallic container capable of serving efiectively as a form for the cementitious material 24 to be cast therein. The seam 22 as just described also increases the inner surface of the container whereby an effective bond is provided between the cast material 24 and the container.

In order to provide the composite weight structure H a supporting rod 25 ispositioned axially thereof, such rod comprising a plurality of zigzag portions 26 within the container 20. A body 24 of cementitious material, such as Portland cement is cast within the container 20 and about the rod 25, it being understood that the weight of the component parts is such as to provide the desired weight in the completed unit. The container 23 is also provided with a plurality of indentations 2'? to enhance the bond between the cement 24 and the container 20. It is preferable that the container 20 be generally rectangular in shape as indicated since such shape is instrumental in preventing the rotation of the weight member within the passage l3 of the window frame.

Adjacent the upper end of the container 2!] the rod 25 is curved at 30 away from the axis of the weight and the end beyond the curve 30 is formed into a helix 3| having a plurality of turns 32, 33 and 34.

The pulley block of the sheave I2 is formed of a rod 35 which maybe of similar material and dimensions as the supporting rod 25. This rod passes through the pulley and extends downwardly on opposite sides therefrom. The rod 35 of the pulley block is twisted at 36 to form an eye 3'! with which a connection is made with the rod 25 of the weight ll. This connection is made by holding the sheave l2 at substantially a right angle to the axis of the helix 3i and threading the eye 31 over successive turns of the helix until a plurality of the turns of the spiral pass through the eye. The sheave may then be moved to a position in alignment with the weight ll whereupon the assembly I9 is ready for use.

It is to be noted that the sheave l2 cannot become disconnected from the weight H unless the sheave is moved from alignment therewith. Hence these elements of the weight assembly can not become disconnected when in normal use within the channel 13 in the window frame I. It should also be noted that the connection just described is such as to provide desired resiliency in the assembly to take care of the forces of acceleration and deceleration which arise when the weight assembly is in normal use.

While a specific embodiment of the invention has been described and illustrated it is to be understood that the invention is not confined to such specific construction since broadly the invention comprehends a counterbalance construction which is extremely simple and which is inexpensive to manufacture.

What is claimed is:

1. A sash weight comprising a metallic container, a support rod extending downwardly within said container, and cementitious material filling said container and anchoring said rod therein, said support rod terminating at its upper end in a multiple turn helical coil proximate the surface of the body, said coil being adapted to threadably enter an eye on a supporting member so that a plurality of turns of the coil pass through such eye and support the weight.

2. A sash weight comprising a support rod anchored within an elongated body of cementitious material, said support rod terminating in a multiple turn helical coil proximate the surface of the body and having its axis substantially transverse to the body, a support member, an eye on said member, the turns of said coil threadedly entering the eye so that a plurality of turns of the coil pass through such eye and support the weight.

CORTEZ E. PECK.