US840998A - Apparatus for constructing walls of concrete. - Google Patents

Description

PATENTED JAN. s, 1907.

0. DIETRIGHS.

APPARATUS FOR OONSTRUOTING WALLS-0P CONCRETE.

APPLICATION FILED JULY 10, 1906.

.Apparatus for Constructing v UNITED STATES PATENT OFFICE.

CHARLES DIETRIGH'S, OF LITTLE FERRY, NEW JERSEY.

APPARATUS OONSTRUCTING WALLS OF CONCRETE.

Specification of Letters Patent.

Patented Jan. 8,1907.

Application filed July 10, 1906. Serial No- 825,490.

tic materials; and it has for its principa object the provision of simple, inexpensive, and effective devices for securing boards or planks in suitable position to form a chamber or casing to receive the concrete or other plastic material of which the wall is constructed and to permit the ready disengagement of the planks from the securin devices as the material of which the wall is uilt hardens or sets, so permitting boards or planks to .be used over and over again in the course of construction of a single wall.

In the construction of wallsof concrete or other similar lastic materials the procedure ordinarily fol owed is to construct a box or casing of plank or boards of suitable thickness into which the plastic material of whatever character is introduced and allowed to set. The box or casin is low when the first material for forming t e wall is introduced thereinto, but is gradually extended upward as the height of the wall increases. The means employed'for securing the plank or boards in position to form the box or casing vary somewhat in character; but, as a rule, the boards or plank which form the portion of the box or casing to receive the bottom of the wall remainin position until the entire wall is completed. In consequence the quantity of lumber re uired to form the casmg for a wall of consi erable height is large,

and the cost of the lumber used adds very largely to the cost of the wall. Moreover, the means employed for securing the boards or plank in position are often such that in removing the boards or plank after the wall is completed the boards or plank become so damaged that it is ractically impossible to use them again for t e same 111' ose.

The improved apparatus w hic constitutes the present invention is designed to hold the boards or plank which form the casing to re-' ceive the concrete for a wall with erfect security and yet to ermit of the rea removal of the boards or p ank without injury thereto as soon as the plastic material of which the wall is formed takes a permanent set. Accordingly it is possible to make use of a comparative y small amount of lumber in the construction of a wall of concrete or the like by using the same lumber over and over again.

In the accompanying specification I have described improved'apparatus forming the present invention, reference bein had to the accompanying drawings, in w ich corresponding parts are designated by similar- 0 aracters of reference throughout, and the scope of the invention is clearly defined in the ap ended claims.

In t e drawings, Figure 1 is a ers view of a portion of a concrete Wall un struction and showing the mode of using the improved apparatus forming the present invention. Fig. 2 is a transverse sectional view through a portion of a concrete wall under construction, showing the action of the improved devices for securing the casing boards orv lank in osition. Fig. 3 is a detail view oi one of t e binding-links.

Referring to the drawings, 1 designates the body of concrete or other plastic material of which the wall is formed, and 2 designates the boards or plank forming the sides of the casing or chamber which receives the concrete.

In Fig. 1 the wall is shown as having the lower portion permanently set or hardened and the upper portion is still held in form by means of the casing. The boards or plank 2 2, between which the lowermost portion of the wall is formed, may be secured in position in any suitable manner, and on these boards or plank are placed the devices for securing the next course of boards or plank. These securing" devices are shown most clearly in Fig. 2, and they include a pair of clamplates for each side of the casing, a bindingink extending through each pair of clampplates, a stay connecting the securing devices at one side of the casing with those at the other, and wedges or the like for bringing the clamp-plates into proper engagement with the boards or plank to hold them in position. The external clamp-plates 3 differ somewhat in form from the internal clamp-plates 4, but both are provided with flat clamping-faces for engagement with the boards or plank 2. Each clamp-plate is slotted for the passage of one of the bindinglinks 5, and each bindective er C011- ing-link is slotted at 6 near one end tofreceive 'a wedge 7. 'At the other end it is provided with a small opening 8 to receive one end of a 7 stay 9. Each stay 9 consists, preferably, of

I tance-apart.

a piece of heavy wire havim end portions 10, w ch are bent substantiall cured in position, the next course of plank or boards is secured by laying the binding-links 5 on top of the lowermost boards, setting the next course'of boards or'plank in position on top of the binding-links, then applying the clam -plates to the binding-links, introducing t e stay 9, then wedging the clampplates into close grip ing engagement with the boards'or plank o the first course as well as of the second. The wedging of the clampplates into close engagement with the boards or plank serves also to bind the angular ends of the stay securely in en agemeht with the openings 8 in the bin ing-links. Consequently, if the lowermost courseof boards or plank is properly placed and secured in po-;

'sition the next course will be held incomplete alinement with the first course, and suc-. ceeding courses willbe similarly alined. "The wall therefore will be perfectly plumb and of uniform thickness frombottom to top.

v In the actual constructionof walls of con creteor other plastic material by'the use of my im rove apparatus the boards or plank shou d be of uniform thickness, and it is desirable that the should also be of uniform length and wi th. The total number of boards or plank required will depend, of

- course, 'upon the size of the wall to be constru'cted; but in most instances the number of boards or plank required will be merely such as is' necessary to form four or five courses. The first course of boards having been secured in position and some of the con crete or other material introduced to form the lower portion of the wall the nextcourse of boards is then placed in position in the manner alread explained, and more of the plastic materia is added to carry the wall up to a height slightly less than that'of the sec 0nd course ofboards or plank. The third course of boards or plank is then secured in position in the manner already described,

and more concrete or other plastic material is then introduced in the chamber between the walls of the casing. If the plastic matey at right anglesto the intermediate portion, the length of the rial is of a characterto "set quickly and firmly,

the next course of boards or plank maybe obtained 'by withdrawing the wedges '7', removing the external clamp-plates 3, and thereby releasing'the lowermost course of boards, which may be then carried upward "to form the fourth course In like manner,

after thewall has been carried u ward almost. I

as'high as the'fourth course 0 boards the wedges 7 and external clam .-plates 3 at the top of the second course. 0 boards may be removed, 'thus releasing the boards of the second course.

of the first course of boardsmay be removed from the binding links. 5, leaving small de- After these boards are removed the internal clamp-plates4 at the top' pressions in the face of the wall after they are removed. After the removal of the clampplates 4 "at the I top of the first 1 course of cards the binding-linksv 5 maybe pressed downward at their outer ends, thus bringing down the small amount "ofplastic material lodged under their inner ends, and the hind ing-l'inksmay then be disengaged from the singularly-turned ends of the stay 9, which is left embedded in the wall. "The small aperturesleft in the face of the wallafter theremovalof the clamp-plates 4' are filled in or groutedwith fresh concrete,-and this being smoothed'off the former location of a'recess in the face of the wall ispractically indistinguishable.

From theforegoing'descri tion and the accompanymg drawings it wil be'very" readily seen that the im roved apparatus enables the builder of wal s of concrete or other plastic material to reduce the quantityof lumber required to a" very considerable extent and permits the same boardsto be used over and over again. In viewof the repeated use of the boards or plank I have found it desirable to select tolerably heavy boards of ap roximately two inches in thickness, an :it is most desirable that the-boards" should be very Well seasoned, so as to prevent them from Warping through contact with the moist concrete.

It is also desirable to paint the "boards with a thoroughlywate roof paint, as the tendency'to warp is 'a l most wholly prevented by this treatment;

-While I have illustrated only one form of my invention, it"will be obvious that numerous variations may be made therein without departingfrom the spirit of. the in vention or sacrificing its advantages. 7

Having thus described my invention, what I claim'as' new, and desire to secure by Letters Patent, is 4 lbs ' 1. In apparatus of the character specified,

the combmation with a pair of clamps, each adapted to grip a plank, of va'stay having each end adapted'for en gement with one of the clamps'and adapte to coiiperate in the action of the clamps.

2. In apparatus of the"character specified, 13o

the combination with a air of clamps each comprising two clamp-p ates and a bindinglink, of a stay adapted at each end forengagement with the binding-link of one of the clamps to cooperate in the action of the clamp.

3. In apparatus of the character specified, the combination with a pair of clamps each comlptrising a pair of clamp-plates and a bindingextending through said clamps and having an aperture near one end, of a stay having end portions adapted to pass through the apertures in said binding-links to 006 erate with said binding-links in holding t e clamp-plates in clamping engagement, said stay belng itself secured in position by means of said clamps.

4. In apparatus of the character specified, the combination with a pair of clamps each adapted to hold two boards superposed edge- Wise in alinement, of a connecting member adapted to hold said clamps at a fixed distance apart and adapted to be held in secure engagement said clamps by the clamping action thereof on the boards.

5. In apparatus of the character specified, the combma'tion with a connectin member or stay of fixed len th having end portions disposed substantial y at right angles to the, intermediate portion, of a pair of clamps each comprising two clamping-plates, a bindinglink and a wedge, each binding-linkpassing throu h the two clamping-plates and being provi ed at one end with an aperture for the reception of one end of the connecting member or stay and being slotted adjacent to the other end for the rece which the clamping-p ates are forced together and the connecting member or stay jammed against one of the clamping-plates.

tion of a wedge by p In testimony whereof I have signed my name in the presence of two witnesses.

7 CHARLES DIETRICHS. Witnesses:

WM. BRADFORD, BAXTER MORTON.

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