318949.1268 Bricklaying study--chronocyclegraphs. This is part of a large series, which goes from 318949.1338 to 318949.1359.
odd: label: General note
content: Category: bricklaying study
label: General note
content: Gilbreth image: GL343
label: General note
content: Related captions: The following captions are FBG's, and are from the N file at Purdue:GL-283 Chronocyclegraph of the motions of the head and left hand of an expert bricklayer laying ten bricks in the old way. Note the pointed ends of the spots indicate the directions of the motions.GL-284 Chronocyclegraph of the motions of the head and left hand of an expert bricklayer laying ten bricks in the old way. Note the pointed ends of the spots indicate the directions of the motions.GL-285 Chronocyclegraph of brickwork. The upper lines show the path of the head, and the lower lines show the paths of right and left hands,- each hand picking up a brick simultaneously and depositing the brick on the wall simultaneously. The bricks are piled upon a Gilbreth Packet and consequently there is no hesitation at the time the bricks are picked up, for the reason that four fingers run in under the bricks on account of the peculiar construction of the packet.Chronocyclegraph of the motions of the head and two hands of an expert bricklayer laying ten bricks, one in each hand, in the new way from a packet. Note the pointed ends of the spots indicate the direction.[The upper lines show the path of the head and the lower lines show the paths of right and left hands. (or 10 bricks--one in each hand--stringing?).] GL-286 Chronocyclegraph of bricklayer reaching for one brick. It will be noticed that he did not pick up the brick and mortar at the same time and that the delay of the left hand for the brick, by reason of the right hand picking up the mortar is very noticeable and the line on the head shows that it also is affected by the delay of the left hand.GL-288 Laying one brick (old method). Showing first one hand and then the other picking up the brick and mortar.--unnecessary waiting.GL-321 Chronocyclegraph of the motions of the head, right hand, trowel and left hand laying one brick the old way. Note that when the brick was positioned in the hand, causes the motion of it caused stopping and starting of the right hand, the trowel and the head.GL-326 Chronocyclegraph of the motions of the head, right hand, trowel head and left hand laying one brick in the old way. Note that positioning the brick twice has twice stopped the right hand trowel and the head. This illustrates the general principle that any motion of any part of the body affects many other parts simultaneously.GL-327 Motions of head, right hand, trowel, and left hand in laying one brick by the old method. Note the left hand picking up the brick after the right hand picked up the mortar. This can be seen due to the distance apart of the spots and of the supplementary time spot which are seen in pairs every twentieth spot. Note that the direction shown by the pointed end of the spot.Chronocyclegraph of the motions of the head, right hand, trowel and left hand laying one brick in the old way. Note that the mortar was picked up first and while the left hand waited. The right hand and trowel then waited while the left hand picked up the brick. This is what happens, when anyone, regardless whether he is bricklayer or surgeon, picks up two things nearly but not quite at the same time. For least fatigue and greatest outputs complementary motions should be performed in rhythm simultaneously.GL-332 Chronocyclegraph of head and 2 hands using fountain trowel for transporting and spreading mortar for 18 bricks.GL-336 Model showing positioning before transportation.GL-339 Motions of the head, right hand, trowel and left hand in laying three bricks in the old method. Note the effect on the head and the right hand when the left hand is flopping the brick.Chronocyclegraph of the motions of the head, right hand, trowel and left hand, laying three bricks in the old way. Note the total absence of hesitation, because both hands grasped their loads at the same time. Note also the effect in the path of the head right of the positionings of the brick.[Chronocyclegraph of bricklaying--bricks being lifted from packet to wall--light on head and hand.]GL-339 Chronocyclegraph of bricklaying. Bricks being lifted from a packet to the wall,- light on head and on hand. [Motions of head, rt. hand, trowel and lt. hand in laying three bricks in the old method. Note the effect on the head and the right hand when the left hand is flopping the brick.]GL-348 Laying three bricks (old method).GL-352 Chronocyclegraph of the head and two hands while using the fountain trowel for transporting and spreading mortar for 18 bricks.GL-353 Chronocyclegraph of head and left hand laying ten brick the new way. Note automaticity due to absence of necessity for positioning the brick. The right hand is handling the mortar, but doe not show in this picture.GL-362 Chronocyclegraph of head and 2 hands using fountain trowel for transporting and spreading mortar for 18 bricks.GL-363 Chrono head, lt. & rt. hands lay one brick -- old method. Note head when mortar and brick not picked up at same time.GL-365 Bricklaying chronocyclegraph, brick being lifted from packet to wall, -light on head and hand.GL-370 Studies in bricklaying showing the motion of flopping a brick affects the motions of the trowel, hand, head and body (old method).
name: label: Collection Creator
content: Perkins, James Secor
label: Collection Creator
content: Gilbreth, Frank Bunker, 1868-1924
label: Collection Creator
content: Gilbreth, Lillian Moller, 1878-1972
setName: label: See more items in
content: Frank and Lillian Gilbreth Collection
label: See more items in
content: Frank and Lillian Gilbreth Collection / Series 2: Glass Stereo Slides (Positive) / 318949.1239 to 318949.1423
unitdate: label: Date
content: undated
container: label: Container
content: Box 9
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Negatives