B. APRIL. LINEAL MEASURING HOD. APPLICATION FILED 11m11.191s. 1,179,264. Patented Apr. 11, 1916.

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THE COLUMBIA F-MrjolJRAPlÍl co., WASHINGTON. D. c. u UNITED 4sTATEs PATENT OEEIOE.

BARTOLOME APRIL, 0F RAGATZ, SWITZERLAND.

LINEAL MEASURING-ROD. 1,179,264. Specification of Letters Patent. Patented Apr. 11, 1916. Application ñled January 11, 1915. Serial No. 1,616. To all 'whom ¿t may concern' .' pressible button headed pin 24. The plates Be it known that I, BARTOLOME APRIL, 9 and 17 are connected together by means citizen of Switzerland,l residing at B-agatz, of a rod 25. The guide pulley 4 is furnished­ Switzerland, have invented certain new and at its periphery with the pins 26, engaging 60 useful Improvements in Lineal Measuring in the perforations 27 of the endless tape Rods; and I do hereby declare the follow measure to insure the correct feeding of ing to be a full, clear, and exact descrip~ the same. Gneend of the shaft of the guide tion of the invention, such as will enable pulley 4 is formed square for the recep Others skilled in the art to which it apper« tion of a key 28 to permit of adjusting the 65 10 tains to make and use the same. tape measure 2 to Zero. In the measuring Measuring rods having a registering de~ rod 1 is mounted the rod s@ extending from vice operated by a plunger situated at one one end thereof to the other, consisting of end of the rod are known. ' . the parts 13, 9, 25, 17 and 19>and serving The object of my invention is to facili as feed member for the described register. 70 15 tate the operation of measuring and avoid Figs. 1-4 showthe rod m in its initial posi~ error when using two such measuring rods tion in which the bar 13 projects a certain together by alternately placing the end of distance g from the end y of the `measur one against the end of the other in the ing rod 1. ~ known manner. I attain this object by the The graduations on the tape measure 2 75 20 mechanism illustrated in the accompanying are such, that when displacing the feedk drawing, in which­~ ' member m in the measuring rod 1, that is Figures 1 and 2 are two different eleva to say, at each feeding movement, the nu' tions Of a measuring rod constructed­ in ac merals on the tape measure which appear cordance with one embodiment of this in­` opposite the said apertures increase in Value 80 25 vention. >Fig. 3 is a longitudinal section, in accordance with the length of the measur and Fig. 4 an elevation partly Vin section ing rod. of the rod on an enlarged scale. In using the measuring rod constructed Similar figures of reference refer to simi in accordance with this invention, two rods lar parts throughout the several views. must always be used, one being placed 85 30 Referring to the figures generally, the against the other alternately. Assuming` measuring rod is internally longitudinally the length of the measuring rod is 5 meters, furnished with an endless tape measure 2 the numerals on the tape measure will in which is carried over guide pulleys 3, 4. crease 10 units in value; for instance the The numerals on this tape measure are Visi numerals on the tape measure of a measure 35 ble through apertures 5 formed in the rod. ing rod A would be 5, 15, 25 and for a meas The guide pulley 4 is rigidly connected uring rod B, 10, 20, 30 and so on. In the with its shaft 6 and on the latter is em case of a measuring I‘od 4 meters long the ployed a feed wheel 7 (Figs. 3 and 4) in value of the numerals always increases which engages the spring influenced pawl eight units, hence, the measuring rod A is 40 8. The pawl 8 is pivoted to the plate 9. numbered 4, 12, 20 and so on and the rod B The plate 9 is rigidly secured to the cross 8, 16,-24 and so on. In the case of a measur stud 10 mounted in the longitudinal slots ing rod three meters long the value of the 11 of the frame 12. To the stud 10 and numerals increases six units, hence, A is plate 9 is secured the bar 13 which extends numbered 3, 9, 15, and B 6, 12, 18 and so 10U ' through the frame plate 14. The frame 12 on. If a measuring rod A 5 meters long has is mounted in the tube 15. The coiled spring a number of reading apertures for example ’16 retains the plate 9 and the stud 10 in 4, at distances of one meter, the numerals the position shown in Figs. 3 and 4. The 1, 2, 3, 4, 11,12, 13, 14 and so on are visible, guide pulley 3 at the other end of the meas~ the fifth numeral being indicated by the end 165 ~50 uring rod together with the plate 17 se of the measuring rod, in a rod B the series cured to the cross stud 18 and the bar 19, of numerals 6, 7, 8, 9, 16, 17, 18, 19 and so is mounted in the frame 20. The cross stud On. When placing the two measuring rods 18 is also slidable in the longitudinal slots against each other, the rod A will shovsT the 21 of the frame 20. To the frame 20 is series of numerals 1-4 and B 6-9; when UI UI pivoted the back pawl 22 the tooth 23 of displacing the measuring rods, A will show which is placed under the control of a de the series of numerals 11~­~14and B 16»-19 2 1,179,264

and so on. If in the case of a measuring to say, the measuring rod B registers auto rod 5 meters long, the graduations of the matically. Having removed the measuring tape measure are equal to 1 centimeter and rod A from B and before placing A against the apertures are arranged at a distance of B the pin 24 of B is depressed in the same " (y one meter, the tape measure Will be sufficient manner as that of A has been depressed pre-_ to measure a distance of 1000 meters, after viously. which the tape measure has to be set back The distance measured by the­ first to Zero. measuring rod need only be registered by The measuring rod is used as follows: If hand When setting the rod at the commence 50 10 a distance requires measuring, the assistant ment of the measuring operation. will place a rod A upon the starting point In lieu of the said tape measure a dis of the distance to be measured, move the feed tance counter may be built into the measur member x into the rod until the end of the ing rod. bar 13 is flush With the rod end y; this I claim: causes the bar 19 at the other end z of the 1. In a lineal measuring rod, the combi« rod to be slid out of the rod the same dis nation With an indicating and registering tance as the bar 13 has been slid in. This device, of an operating plunger at eachl end displacement of the feed member 00 causes of the measuring rod, and means intercon the feed pawl 8 to move the tape measure 2, necting the plungers, the aggregate length 60 for example in the case of a measuring rod of the interconnecting means and plungers 5 meters long, 5 units. During this move being greater by the length of one plunger ment a pin 29 on the plate 17 Will take up than the length of the measuring rod, sub a position behind the tooth 23 of the pavvl stantially as and for the purpose set forth. 22 and thereby prevent the feeding member 2. In a lineal measuring rod, the combi~ 25 moving backward. Before placing a second nation _with an indicating and registering measuring rod B against the first one A the device, of an operating plunger at each end pin 9A is depressed, the back paWl 22 and of the measuring rod, of means intercon thereby its tooth 23 disengaged from the necting the plungers, the aggregate length pin 29 and the feed member m under the in of the interconnecting means and plungers 30 fluence of the spring 16, displaces itself being greater by the length of one plunger from the right to the left for the distance than the length of the measuring rod, and of for Which the bar 13 projects from the end locking means for locking the said plungers of the measuring rod in its initial position. and interconnecting means out of their' During this backward movement of the said initial position until released by hand, sub C.J Cn bar the tape measure remains at rest, the stantially as and for the purpose set forth. teeth of the feed paWl 8 gliding over the Signed at Zurich, Switzerland this 21st teeth of the ratchet Wheel 7. ÑVhen placing day of December 1914. the­ end y/ of the second measuring rod B BARTOLOME APRIL. against the back end z of the first measur Witnesses z 40 ing rod A, the feed member of B is actuated WILH. REINHARD, by the end z of the measuring rod A, that is CARL GUBLER. Copies of this patent may be obtained for five cents each, by addressing the “Commissioner of Patents, Washington, D. C.”