184 



THE CIVIL ENGINEER AND ARCHITECTS JOURNAL. 



[JUME, 



where Ihe compressing pistons next enter the precedingapartment, to effect 

 the formation of a brick therein. 



TINNING PIPES, 



For "improvements in maddnerij fur making and tinning lead pipes." 

 Robert W. Lowber, Rochester, N. York. 



This is for tinning lead pipes, (wliich are formed in a die and around a 

 mandrel) by introducing the melted tin through the mandrel, or core, which 

 is hollow and provided with apertures for the discharge of the tm inside 

 the pipe. 



Claim. — " What we claim herein as oar invention and desire to secure 

 by letters patent, is the method herein described of tinning the inside of 

 lead pipes in the course of manufacture, by passing the melted tin down 

 into the mandrel and out at the side thereof, as above made known, whether 

 applied to this machine or any other substantially as described." 



VENTILATING STOVES. 



An " improcement in stoves for warming parlours, and for other pur- 

 poses." John Morrison, Newark, New Jersey. 



The nature of this improvement " consists in taking the air from near 

 the ceiling of rooms, for supplying air to the lire, and thus incidentally 

 ventilating the apartment. For this purpose there is a pipe which extends 

 up from the ash pan to within a short distance of the ceiling, where it is 

 made bell mouthed for the free admission of air. This pipe is surrounded 

 by an outer jacket, which communicates with the chimney, the Ure cham- 

 ber, and with the case surrounding the fire chamber of the stove, by separate 

 pipes governed by dampers for regulating the draught, heat, &c. 



HYDRAULIC PAINT. 



An " improved mode of making hydraulic paint." Thomas G. Warren, 

 Troy, New York. 



The patentee says, — " This paint is composed of ' hydraulic cement,' 

 (sometimes called ' water lime') made line by grinding, and ' linseed oil' to 

 be mixed in such proportions as to make a paint of ordinary thickness. 

 The use lo which this paint can be applied is general. It can be applied 

 to houses of either brick or wood, and also to cloth roofs for houses, or other 

 purposes. I have a cloth roof to my house painted with this new paint, 

 and it is perfectly tight. The cost of such a roof is considerably less than 

 that of ordinary roofs. The same materials, but with a less proportion of 

 the oil, make an excellent water-tight putty." 



PRINTING PRESSES. 



"Improvements inpresses." Joseph Saxton, Washington, District of 

 Columbia. 



The patentee says, — "My invention and improvements consist, firstly, in 

 the use of a flexible or elastic platen, instead of a rigid or inflexible plate 

 of metal as a platen. Secondly, in the application of pressure to such 

 flexible or elastic platen by means of a liquid, or aeriferous fluid ; and 

 thirdly, in the arrangement of machinery in printing presses, copying 

 presses, and lithographic, and zincographic presses, for the purpose of ap- 

 plying such pressure to such flexible or elastic platen. The object and 

 effect of using a flexible or elastic platen with the pressure by means of a 

 liquid or aeriferous fluid is, that the platen is equally pressed or acted 

 upon over its whole surface, and which may therefore be employed in any 

 position, to press upwards, downwards, or sideways. The elastic platen 

 is to be of the necessary size for the press in which it is to be used, as in 

 the case of the ordinary platen, and is to be a thin plate of brass or other 

 suitable metsil, varying in thickness from that of a sheet of foolscap paper 

 to about half an inch, according to the dimensions of the platen, and of 

 the vacant spaces between the columns or pages of types or figures, lech- 

 ■ically in printing called ' the white.'" 



SAFETY VALVES. 



For " improvements in the safety valve for preventing steam boilers from 

 bursting or collapsing." Abraham Patterson, Rush, Pennsylvania. 



The claim is for the employment of the apparatus termed the working 

 column, in combination with the uplifting valve and float, as described, 

 whereby the pressure of steam on the working column is added to the 

 pressure on the safety or uplifting valve, for the purpose of opening it 

 when the water descends below a given point, and which, at the proper 

 height of the water, permits the free action of the uplifting valve. A 

 claim is also made for the employment of a pendulum, so situated, or so 

 suspended, that by the rocking, tilting, or careening of the boiler or boat 

 upon which such pendulum shall be employed, the said pendulum shall 

 so attach itself to, or so suspend itself upon a tackle, lever, or pivot, as 

 thereby to apply its weight as a moving power to the opening of a safety 

 valve or valves for steam boilers, as described. 



RAILROAD TRUCKS. 



For an "improvement in railroad trucks." Fowler M. Ray, New 



York. 



The patentee says the nature of his invention consists in substituting a 

 single cross beam of timber, having end bearers of metal for the connect- 

 ing bars of the axles, furnished with a single spring, and having a pedestal 

 connecting the bearer, spring, and cross beam together at each side of the 

 truck in such a manner as to give to the whole frame work or superstruc- 

 ture of the truck a yielding capacity, instead of the usual method of a 

 stiff frame work, and short unyielding springs, two at each side, as here- 

 tofore most commonly constructed. By which yielding quality several 

 desirable objects are elfecled. — 1st, The capability of elevating either of 

 the wheels of the truck to a considerable height without affecting the posi- 

 tion of the remaining wheels upon the track, and by which obstructions 

 are passed with greater safety. 2nd, It gives to each axle, independent 

 of the other, a facility to vibrate laterally without changing their parallel 

 position to each other, and by which, short curves are made easy. 3rd, 

 Its yielding and elastic quabty, rendering vertical and lateral concussions 

 less severe than in the ordinary (rigid frame) truck. 



For " improvements in the manufacture of boats and other vessels of sheet 

 metal. Joseph Francis, New York. 



The invention consists in forming the sheets of metal with mouldings or 

 beads in suitable places to take up the surplus metal, when ihe said plates 

 are pressed into form, by means of projections on the die and correspond- 

 ing depressions on the matrix, or concave mould, which gather up the 

 metal and prevent wrinkles around between the upper and lower parts of 

 the boat, so as to present a smooth surface, and also in forming a recess or 

 bed for the gunwale, which holds it in place and prevents its getting 

 knocked down. A flanch around the stem and stern posts, and along the 

 line of keel, is also added, which takes up the surplus metal there, and 

 forms the keel, and stem and stem posts. 



REGISTER OF NEW PATENTS. 



If additioral information be required respecting any patent, it may be obtained at the 

 office of this Journal. 



ROLLING IRON BARS. 



Thomas Howard, of the King and Queen Iron Works, Rotherhithe, iron 

 manufacturer, for ** improvements in roilmtj iron bars for suspension bridyes 

 and other purposes." — Granted October 6, 1845; Enrolled April 6, 1846. 



Fig. 3. 



Fig. 3. 



The improvements consist in a method of rolling wrought-iron bars with 

 heads, or increased breadths thereon, in one entire piece, so as to avoid the 

 uncertain and insecure process of welding such heads on to the bars, parti- 

 cularly when subjected to great strain or tension, as in suspension-bridges, 

 and other works requiring similar bars. To effect this, the slab faggot or 

 shingle from which the bar is to he produced, is heated in a furnace and 

 passed through grooved or other rollers in the ordinary way, to form an 

 elongated slab. This slab is then carried to what are termed heading rollers, 

 having enlarged parts or collars upon them, between which the slab is passed 

 edge first, or breadth ways, as often as is necessary, and which produces the 

 form required on the slab o, fig. 1, while the intermediate part of the slab re- 

 mains incompressed by the rollers, which are of less diameter where this 

 latter part passes between them. The slab is then elongated by plain or 

 finishing rollers of ordinary construction to the finished bar or length and 

 thickness required, as shown at b, fig. 2. When the heads are intended to 

 be of the same thickness as the other parts of the bar, they should come 

 from the heading rollers sufficiently thick to receive some pressure by the 

 finishing rollers, due allowance being made for the elongation, particularly 

 when the bars are to be employed in suspension-bridges, in order to produce 

 the grain or fibre of the iron in cross directions around the holes made in 

 such heads, when completed by any ordinary means. A view of the heading 

 rollers preferred is shown in fig. 3, and when the bars are large, it is recom- 

 mended that these rollers have given to them a to and fro or reversing mo. 

 tion, by means of known machinery for such purposes, in order to expedite 

 the rolling out of the heads in conjunction with the other operations, and ta 

 render a second heating of the slab unnecessary. 



