US2272762A

US2272762A - Base screed

Info

Publication number: US2272762A
Application number: US308617A
Authority: US
Inventors: Awbrey William Powell
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-12-11
Filing date: 1939-12-11
Publication date: 1942-02-10
Anticipated expiration: 1959-02-10

Description

Feb. 10, 1942. W; p AWBREY 2,272,762

BASE SCREED Filed Dec. ll, 1959 2 Sheets-Sheet `2 @y BY @MM j ATTORNEYS.

Patented Feb. 10, 1942 'raar 8 Claims.

This invention relates to improvements in base screeds and more particularly to a screed used between the baseboard and the side wall plaster or stucco.

In building construction it is found expedient to attach the base screed by nailing to the wood grounds of the structure walls, or by wiring to metal lath and then apply the plaster or stucco and the baseboard, which is usually made of terrazzo or some other hard material. Since the outer edge of the screed is exposed, it is usually made of a non-ferrous material, while the base is made of a ferrous material which is less eX- pensive. 4

The principal object of the present invention is to provide a base screed comprising a base strip of undulated cross sectional form to which is secured a dividing strip.

A further object of this invention is the provision of a base screed having a base strip provided With leveling tongues, by means of which the base is leveled to an irregular wall surface.

Another object is the provision i base screed having convenient and eiective means for securing the base strip and dividing strip in proper relative relation. l

Other objects are simplicity and economy of construction, convenience of installation, and adaptability for use in various types of building structures.

With these as Well as other objects which will appear during the course of the specication in View, reference will now be had to the drawings wherein:

Figure 1 is a perspective view of a base screed,

in the operative position in a wall, embodying this invention.

Fig. 2 is a cross sectional view taken on line II-II of Fig. 1.

Fig. 3 is an elevational View of a portion of the base screed.

Fig. 4 is an edge view of the base screed shown in Fig. 2.

Fig. 5 is a cross sectional View of the base screed in position with the securing tongues extended to meet the wall surface.

Fig. 6 is a sectional view of the base screed in position with a modified form of dividing strip of the projecting type.

Fig. 7 is a View showing a further modified form of the dividing strip.

Fig. S is a modiedform wherein the dividing strip is arcuate along its free edge to overlap the baseboard.

Fig. 9 is an elevation of a modified form of the base screed wherein tongues are formed along one edge of the dividing strip to facilitate fastening and stabilizingthe parts.

Fig. 10 is a cross sectional view taken on line X-X of Fig. 9.

Fig. l1 shows va further modication of the screed wherein a different means is provided for securing and positioning the dividing strip on the base member.

Fig. 12 is a cross sectional View taken on line XII-XII of Fig. 11.

Fig. 13 is a fragmentary sectional view taken on line XIII-XIII.

Fig. 14 discloses another modification wherein transversely disposed tongues, formed along the inner edge portion of the dividing strip extend through slots formed in the base member and are oiset to secure the parts together.

Fig. l5 is a cross sectional view taken on line XV-XV of Fig. 14; and

Fig. 16 is a fragmentary sectional view taken on line XVI-XVI of Fig. 15.

Throughout the several views, like reference characters designate similar parts and the numeral 20 designates a base member or strip of longitudinally corrugated sheet metal formed to present a transversely undulated strip having outwardly projecting anges 22, which extend obliquely to the supporting wall and serve as anchoring means for the plaster, cement or terrazzo coating.

Formed through said base strip adjacent its edges are openings 24 through which the plaster material P passes to make binding contact with the structure wall W. Nail holes 26 are also provided adjacent both edges of the base strip to receive nails N, by means of which the base screed is secured to the structure wall.

In manyinstances, where the structure wall is not planar and therefore, not parallel with the desired plaster surface, it is necessary to provide some leveling means. The means provided consists of inwardly projecting tongues 28 which are preferably formed from the sheet metal of the base member 20. These tongues maybe formed at any desired angle to the body of the base member and may be bent to obtain the proper leveling of the base member relative to the wall. If the tongues are normally extended to the maximum, then the mechanic simply presses the tongues closer to the base body to obtain proper leveling. It is very apparent that in many instances portions of the base member will be spaced apar from the structure wall. Y

The out-turned anges and general undulated cross sectional form of the base strip 20 adds materially to its strength and rigidity. As shown in the drawings, the base strip is longitudinally corrugated, however, many other forms of undulations might be used.

The openings 3i] formed through the base member by the formation of tongues 28, also permit of a flow of plaster therethrough to facilitate a binding together of the wall elements.

The dividing bar or strip 32 comprises a relatively thin strip of metal having an uninterrupted straig t edge 34 which serves to present a dividing line between the plaster P and the base member B. This dividing strip is securely attached to the base member so as to extend outwardly therefrom with the straight edge 3d in the desired plane of the finished wall. Many forms of dividing strips, now in general use,`

might be substituted for the planar type shown without departing from the spirit of the invention.

In the preferred form, shown in Figs. 1, 2, 3, and Il, it will be noted that dividing strip 32 is slit at 36 adjacent its inner edge and oiset at 38 to present an opening 8 at. the side of the strip through which a tongue $2, integral with the base member 22, is adapted to be positioned and formed to anchor the dividing strip to the base member. These offset portions 38 are in spaced apart relation along the inner edge of the dividing strip and are formed alternately at opposite sides of the strip so as to present a relatively wide bearing base for the dividing strip on the base member, and also providing securing means at opposite sides of the strip. In this form of base screed, it will be noted that the tongue i2 substantially lls the opening lll so that no objectionable amount of material can pass through the openings formed through the strip.

In the use of this base screed, the mechanic rst nails the screed to the structure wall and forces the tongues to a position suitable for supporting the screed with the straight edge thereof in the desired plane of the finished wall. When the screed is thus positioned, the plaster Wall above the dividing strip is rst laid and then the base member of terrazzo or other suitable material is laid. Vv'hen the wall is complete the edge Sli of the dividing strip is ilush with the wall. surface. The plaster and terrazzo will extend between the structure wall W and the flanges 22 of the base member thereby anchoring the wall coatings securely adjacent the di- Viding strip, also, there will be an adhesion of the wall materials at the openings in base member 2U. The tongues 42 are relatively short so that their free ends, when in the operative position, do not extend to the body of the base member, thereby presenting a ledge to serve as an anchor for securing the wall coatings in position.

Referring now to Fig. 5, it will be noted that the structure is substantially the same as that shown in Fig. 2, except that the tongues 42 are formed with the free end portions thereof at substantially right angles to the main body of the tongue. These projecting ends of the tongues serve as anchoring means for the plaster, etc.

Fig. 6 shows a modified form of the screed wherein the outer edge of the dividing strip 44 is angled at 5.6 to overhang the wide baseboard member.

Fig. 7 discloses a further modified form wherein the dividing strip 68 is offset at 50 at right angles to the body of the s trip, with, an outwardly curved edge portion 52 for overlapping the base member.

The modified form shown in Fig. 8 is similar to that shown in Fig. 6, except the dividing strip 54 is rounded at 56.

Referring now to Figs. 9 and 10, it will be noted that in this modified structure, tongues 58 are formed outwardly from the inner edge portion of the dividing strip 32. The tongues are securely engaged by the tongues 42 which are integral with the base member. 'Ihis type of base screed can be formed without drawing the metal of the dividing strip.

A further modification is in the formation of the leveling tongues B by simply making two splits 62 inwardly from the edge of the base member and then pressing the tongues inwardly. This form is otherwise as shown in the preferred form.

The modied form shown in Figs. ll, 12 and 13 provides a base member 32 having centrally disposed tongues Gll formed at right angles to and transversely of the base member. These tongues 64 are disposed in spaced apart relation throughout the length of the base member, and are adapted to enter slots 66 formed in the inner edge portion of the dividing strip 32.

Referring to Fig. 13, it will be noted that the inner end of slot 6G is enlarged to form shoulders E8. After the dividing strip is positioned on tongues 54, the edge portion of the tongue is oiiset at l5 to engage shoulder 6B for securing the dividing strip and base member together. For securing the dividing bar in a position, at right angles to the base member, a pair of spaced apart tongues l2 are formed from the base member and are adapted to receive the dividing strip therebetween. A pair of tongues 72 may be positioned between each of tongues 64.

Modiiied form disclosed in Figs. 14. l5 and 16 contemplates the formation of transversely disposed ears 'i4 spaced apart and on alternate sides of the dividing strip 7G. The longitudinally corrugated base 2Q is provided with slots 'I8 into which the tongues are adapted to be tted, as clearly shown in Fig. 15. That portion 80 of ear '14, which extends through base 2U, is oiset to secure the dividing strip to the base member in a substantially perpendicular relation thereto. In this form, the tongues 82 are shown in alignment with the body of the base and may be forced against the wall when it is desired to use them for leveling the screed.

It is very evident that many different means might be employed for securing the dividing strip to the longitudinally corrugated base member without departing from the spirit of this invention, and it is, therefore, desired to be limited only by the scope of the appended claims.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

l. A base screed comprising a transversely corrugated base member having integral, outwardly projecting securing tongues and inwardly projecting leveling tongues; and a dividing strip having spaced apart offset portions positioned to extend lengthwise to said base member and secured in an upright position thereto by said securing tongues engaging said offset portions.

2. A base screed comprising an elongated base member of undulated cross sectional form having outwardly projecting securing tongues disposed in spaced apart relation; and a dividing strip having spaced apart slots and being positioned vertically and lengthwise of said base and secured thereto by means of said securing tongues which are extended through said slots and rebent to engage said strip.

3. A base screed comprising a, transversely undulated base member having obliquely disposed longitudinal edge flanges and out-turned securing tongues; and a dividing strip slit and offset at spaced apart intervals along one of its edges to present a series of slots at each side of said dividing strip to receive said securing tongues, whereby the base member and dividing strip are secured in fixed relative relation.

4. A base screed comprising a transversely corrugated sheet metal base member having integral securing tongues projecting outwardly therefrom; and a dividing strip having an uninterrupted straight edge and having transversely 01T- set portions along its opposite edge whereby openings are formed through said strip to receive said securing tongues for securing the base member and dividing strip in relative xed relation with said tongues formed about the respective oiset portions.

5. A base screed comprising a transversely corrugated base member having outwardly turned edge flanges and spaced apart securing tongues; and a dividing strip having integral tongues disposed in offset parallel relation to the strip and positioned along its inner edge in engagement with said securing tongues whereby the dividing strip is secured in an upright position on said base member.

6. A base screed comprising a transversely corrugated base member having outwardly projecting edge flanges, cut-turned securing tongues and spaced apart, integral leveling tongues; and a dividing strip having portions along one edge thereof alternately projecting transversely from opposite sides of the strip to engage said securing tongues to secure the dividing strip and base member in Xed operative relation.

' 7. A base screed comprising a transversely corrugated base member having outwardly turned securing tongues and integral spaced apart positioning tongues; and a dividing strip slotted inwardly from one edge thereof positioned between said positioning tongues with said securing tongues extended into said strip slots whereby the base member and dividing strip' are secured in operative relation.

8. A base screed comprising an elongated base member transversely corrugated to present an undulated cross-sectional form and having obliquely disposed longitudinal edge flanges; 1ongitudinal spaced apart tongues formed outwardly from the body of said base member; and a dividing strip having loops formed along its one edge portion to co-operate with said tongues to secure said strip to said base member intermediate said ianges to extend parallel therewith and to be disposed substantially perpendicular to the base member.

WILLIAM POWELL AWBRE'Y.