USRE14148E - sexton - Google Patents

Description

TlLlLS.

J. P. SEXTON PLASTEH LATH,

APPLICATION FILED sEPLzo, 1915.

Reissued June 6, 1916.

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I. P. SEXTON.

PLASTER LATH.

APPLICATION man SEPT. 2o. 1915 2 SHEETS-SHEET 2.

Reissued June 6, 1916.

.ll lll Original No. 1,115,593, dated November 3,1914, SeriaLNo. 757,756',- npplication for' reissue -led September v Seriallo; 51,726. 'Y

"Toall'lvlwmitmayco'noei'rn: v i' Be it known that I JAMES l. SEx'roN, afi

- plaster-coat to the said base.

l UNITED OFFICE.

JAMES r. sExtloN,4 or Los ANGELES, CALIFORNIA, assiaNoB., BY MEsNE ASSIGN- v MENTS, T0 BUTTONLATH MANUFACTURING' C OMPNY.

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citizen of the Unitedtates, residing Imfg-lios -Angeles,.in,the countyof Los Angeles and State of California, -havev invented anewand useful Plaster Lath, of whichl `,the folf lowing is a specification.' f y y. This invention relates to a plaster lath or'- l mortar lath, which is adapted to be used-as" abase or foundation for-the' plaster coat on walls and 'ceilings of buildings, andthe main object of the present invention is `to provide for securely locking or keying the A further object'of the invention .is to provide a plaster `lath base for. th'e purpose stated, which will be unaffected by water, so that there is no swelling or warping of the base of any ortion thereof by reason of the dampness o the applied coat of plaster, and

whereby any looseness or hollow spaces in the plaster coat isavoided. v

Other objectsof the invention will appear d hereinafter.

The accompanying drawings illustrate embodiments of my invention, and referring ther'eto;

Figure'l is a front elevation of a portion' f t e plasterlath showing at one part thereof vthe" plaster coat applied thereto. Fig. 2 is a-section on line a02-wz 1. Fig. 3 is a section on line :v3- w3 Fig. 1. Fig. 4-is a section on line :v4-m4 Fig. 1. Fig.- 5 is a. section on line Fig. 6 is fa'lsectional view of a portion o the aper 'formed 'with reinforcing wire therein. Fig. 7* is a lsectional view of the paper formed Without the wire. Fig,`8 is a longitudinal sectionof .the form ofthe invention in which the key perforations are made` in'the sidesinste'adof the bottom of the vcorrugations. I Fig. 9 is a section on linex-r/U? Fig. 8. FigLlO is a vertical section of a form 'of the invention wherein the corrugations 1n the paper Vform are bentover to secure a lateral interlock. Fig. 11 is a vertical 'section showing the application ofthe plaster'keying buttons in coperation with' reinforcing wires. Fig, 12 is a vertical section showing a double faced wall member adapted to receive a plaster c'oat on each side. Fig. 13 a vertical section of another form of the invention. Fig. 14 is an elevation of a modifiedl form of my invention. Fig. 15 is a sec- 1 tion Aon linel Sp'eciicationof Reissued iettei's i!"atentf` June 6, 1916,

'perspective of-fa'formlof. theinvention using uttons aloneas' keying means. Fig. 17 is a sectional ,viewl 'of' another modification.

' jReferrmg to Figs. 1. to 7,. the plasterlath comprises a form sheet'or member 1 of pa per f or `-other s1 1i table material, a body o r base 2 'of plaster o r mortar in 'adherent contact vwith saidpaper and forming a backing therefor, and' keying means in connection i 'with lsaid form sheet' and base for insuring the retention ofthe plaster coat on the outside of the form'. In order to facilitate the @formation of the .keying means and to provide a more effective contact for. the applied "plaster coat, Iprefer to corrugate the form u lmember l as 'shown lat l3, and at suitable points therein,` for example, at the bottom of the grooves or depressions of said corrugations, said form member is perforated as shown at 4, so that when the plaster or mortar base l2 fs applied tosaid form member, it. penetrates through said perforations forming buttons or heads 5, which iareV outwardly from said4 perforations and form effective keys for retention Iof the plaster coat indicated at 6, bothby reason of the adapta.- bility of the .plaster surface of said'buttons for adhering td the plaster coat, and of the e of the spaces 7 betweenl dove-tailed sha said buttons. `he Aprojection of these keys overl the plaster base, by reason of their enlargement outside of the form sheet, also serves to lock the base tothe form sheet. In

4order to increase-the'keying action, and to give the effect of furring I may provide keying membersconsisting of wires or cords 10, extending transversely through the corrugations 3 .at suitable intervals, for example, th ough alternating'rows of bilttons 5, s0 that certain ofsaid buttons 'embed or inclose said members 10, while the other buttons do not contain any members'lO. I prefer to arrange the buttons in successive corrugations in staggered relation, as shown in4 Fig. v1, thus-providing a close'and uniform .di ribution of the buttons without causing the'buttons to be spaced too closely either transversely or laterally. With this staggered relation of the buttons the rein'-l forcing members 10 tai-n portions asshown atlO where the cross the ooves of the corrugations. t

will be un erstood that the term wires as Figf 14.. Fig. 16 ig a,-

are left exposed at cerproject as `.high orhiglier than the plasterI buttons fand project above said buttons, so that the lathing may be shipped or stored Without breaking oli thembuttons.. The

structure formed as above described issuiciently rigid and strong to serve all the purposes of a lathing material, and forms an effective lathing and base for thefplaster coat. The plaster lath formed as above described is` secured in position on' a wall of the building in' any suitable manner, for example, by nails driven through the same, and the plaster coat indicated at 6 is applied to the outer face thereof, said plaster coat interlocking with the keying buttons 5, and y the keying wires or cords 10, so as to be secured or retained on the base.

The water proofing of form. member 1. has

the advantage that when the plaster is applied to the plaster lath7 as above described, the form member l does not absorb lWater and beco'me` swelled or loosened and therefore retains its shape, so that when the plaster coat dries, there are no 'gaps or vacancies left between the plaster coat and the base. In applying the plaster coat to plastered boards having a paper facing, the 'objection has arisen that the paper is swelled and warped by the moisture of the plaster coating, and loosened by the Weight/of the plaster and when the parts become dry the paper shrinks away `from the'plaster coat leaving vacancies or hollow spaces back of the plaster lcoating with a result that the plaster coating is liable to become detached. Byv water proofing the form member for the base, this objection is obviated, and the parts retain their shape throughout the operation.`

In some cases,V however, the supporting action of the buttons and the corrugations is sufficient to prevent sagging of the paper :form sheet, even'without waterproofing and the waterproofing may then be dispensed with. The cords or Wires may be omitted as in the form shown in Fig. 16, thefconstruction being otherwise as above described. y

In place of making the perforations in the bottom of' the groove in the base, such perforations may, as shown in Figs. 8 and 9, be made in the sides of the'corrugations or grooves 15, of the form member 16, so that the mortar or plaster backing or base 17 applied to the back of the form member 16 eXtrudes through these perforations 14 forming bridges 18, which serve the purpose of keyingbuttons and permit the plaster coating 19 to How beneath the same as shown at 19 to give a more effective keying action.

As shown in Fig. l0, the corrugations 2O of the form member 21 may be bent over so as to overhang the buttons 22 formed by the plaster being forced from the back or base 23 through .perforations 34 in the form member, so that said buttons are engaged and retained in such overhanging portions of the covrrugations.

As shown in Fig. l1, the form sheet may be provided with such intermediate corrugations' indicated.A at 3() vwhich may be perforated asshown at l3l so as to allow plaster to pass from the back 32 through form 33 and form buttons 34 embodying, or embedding the wire 35 which passes through the main'corrugations 36.

By placing two of the above described` plaster laths back to back or by ,doubling over theplaster lathing so as to form a double face member, as shown in Fig, l2, the invention may be used for forming walls, capable of being used for partitions and the like, and adapted toreceive plaster coating for each side.

By rounding the corrugations of the form member as indicated at 35 in Fig. 13, the plaster lathing constructed according to my invention is adapted to receive any suitable metallic lathing orwire netting, which can be nailed to the rounded outer edges of the corrugations.

The form member for the plaster lathing may be made flat, as shown in Figs. 14 and 15, and provided with perforations 38, through Which thepla'ster back 29 extends to form keys 40 adapted to contact with and form an adhering surface for the plaster coating.

Instead of corrugating the form sheet,'the

depressions may be formed as countersinks therein, as shown at 45 in Fig. 17, the plaster base 46 extruding through a perforation 4'7 at the bottom of each countersink or depression to form a button 48 which is housed or protected by the Acounter-sink.

The corrugati'ons' above described also form depressions for housing and'protectingthe keys, said keys extending from the plaster base through the perforations intov the depressions formed by said corrugatons. In such a construction in which the keys project from the form sheet, but are located within the depressions in the form sheet, the keys are protected from damage during storage and shipment and the plaster laths `can be stacked or piled upon one another l .'In the form shown in Fig. 17 there is an cup or depression formed around each but! ton, into which cup the applied superimlath, the tops of the keys being substantially 'Hush with the elevated parts of the form sheet between the depressions.

osed plaster is forced andi-allowed to set.

by the exclusion of air when the p aster is en once set in this cup around the button, the applied plaster is very firmly bonded to the plaster lath, not only by adhesion of plaster to plaster but by mechanical bond, and also by a peculiar suction action. The plaster surrounding thebutton is..its'elf surrounded by the body of the laster lath, and' it is consequently practical y impossible to pull theA intruding plaster off over the endv of the button, as it must expand in so doing. Also there is a suction action in the cup or depression under the int-ruding plaster tending to prevent the plaster parting from the plaster lath; this suction bein caused applied. The depressions further have the very good effect of protecting the buttons during Amanufacture',

etc.

l'WhatIclaimisz ^1. A plaster lath comprising a perforated handling, shipping,

' Y form member and a cementitious base on the 'to form keys.

"back of Asaid f form` I Iiember, extending through the perforations in' the form mem- Y ber and projecting from'the form member 2. vA plasterlath comprising a form sheet having depressions and'provided"with perforations in said depresslons, a 'cementitious base on the back of said form sheet, andcementitious keys extending from said -base forwardly through said perforations and projecting from` said form sheet into saidn depressions.

3. A plaster lath comprisinga form sheet having depressions andA provided with' perlforations in said depressions, a cementitious base on the back of said form sheet, and cem- .entitious keys f extending 'from [said base forwardly throughsaid perforations andv projecting from said form sheet'into said depressions, said keys being arranged in rows and 1n staggered relatlo'n ln-successlve e rows. 4. A plaster'lath comprising a form sheet having depressions and provided with per.

, forations in said depressions, a cementitlous entitious keys extending from said base through said perforations and flaring outwardly so as to project over said form sheet to lock -the cementitious base to the form `lsheet and serve as keys for retaining an applied coating on the face of theplaster laths, J the outer end surface of said keysvbeing substantially flush with the outer surface -of the said form sheet. I

6. As a Anew article of manufacture, plaster lath comprising a body having depressions onvthat side which is to receive an applied coating, the body being provided with buttons projecting from that side of the body -whichis to receive an applied coatfing, sald buttons extending into said depressions, the outer ends of said buttons being'substantially ilushwith the elevated portions of the body, said depressions forming cavitiesfwhich are filled with the j coating when applied, said buttons being surrounded by and embedded in the said coating when the latter is applied, and vkeying the said coating to the body.

7 A plaster lath comprising a perforated form member and a cementitious base on the back of said form member extending through the perforations in the form .inember to form protuberances projecting above the' immediately surrounding surface of the form member. v8. A plaster lath comprisinga form sheet having perforations and provided with individual -depressionsone aroundand at each perforation, a cementitious base on the back of said formrsheet;y andA` cementitious protuiberances integral with said base projecting through said Aperforations into s aid de resjsions andstanding above'the bottoms o said depressions.

9. A plasterfjlath, comprising a'form sheet having perfp'rations and provided with individual depressinsone around and at each perforation, a'eementitious base on the back of said for-m sheet, and cementitious protuberances integral with said base projecting 1 through saidperforations into said depressions and standing'above the bottoms ofz-said depressions and substantially flush with the undepressed portions of the f'orm sheet.

'10. 'A plaster lath, embodying a cementitiousbody'having a substantially flat face and a plurality'of vspaced p'rotuberances integralwith the body projecting above the immediately surroundin surface of the body ,[face, there being individual depressions insaid body face one around eachpro tuberance. I Y .11. A plaster lath, embodying and ay plurality of spacedbuttons integral with the body projecting'above the immediately `surrounding surface vof the body face, vthere being individual .depressions in said body face one around each button, said u eemencitiousbody having a substantiallyfl'at face 125 buttons .being larger at their outer ends than/'at their inner ends to form keys around which an applied plaster' may set and be mechanically locked t0 the body.

12. In a cementitious construction,a body of cementitious substance, a. perforated facing sheet for the body having individual surface depressions one around each perforation, the said body projecting through the perforations to form protuberances one in each depression.

13. In' a cementitious construction, a body of cementitious material, a perforated facing -sheet for the body, the said' body projecting through the facing sheet to form a key-shaped protuberance larger at its outer than at its inner end.

14. a cemelititious construction, a;body`- -v of cementitious material, a 'form sheeiifffor@l said .body having spaced perforatins through which the body is exposed, and said form sheet having` depressions one 1ndivi'dually surrounding each of the perforations.

15. In a cementitious construction, a body of cementitious material, a form sheet for said body havingspaced circular perforations and circular depressions one individuallyv surrounding each perforation, through which perforations and in which depressions the body is exposed. i y

Signed at Los Angeles, California.

JAMES P. SEXTON.

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