MACHINE TYING OF LETTER-SIZE MAIL
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Year Published: 1950s
Description:
Dating to the late 1940s or early 1950s, this U.S. Postal Service training film "Machine Tying of Letter-Size Mail" explains the proper use and operation of a two-wrap twine tying machine designed for post office needs. The machine could easily bundle mail and would automatically create knots to hold the twine together. The film explains how the machine can efficiently tie bundles of letters and circulars, reducing the effort and fatigue associated with hand tying. The narration emphasizes the importance of threading the machine correctly, checking the knots to ensure they are secure, and tying the bundles properly to prevent mail from becoming loose and causing delays. It provides detailed instructions and demonstrations for tying both normal-sized and thin bundles, highlighting the need for operator skill and knowledge to ensure the bundles are compact and firmly tied. Note: according to the B.H. Bunn Co. website, the world's first automatic package tying machine was invented by Benjamin H. Bunn in 1907.
0:28 - 0:47: Introduction to the two-wrap twine tying machine, designed for post office needs, which ties bundles of letters securely.
0:50 - 1:25: The machine saves effort and fatigue compared to hand tying, but incorrect use can lead to loose bundles and mail delays.
1:28 - 1:44: The film will demonstrate the correct operation of the twine tying machine.
1:46 - 1:58: Key points for using the machine: thread it correctly, check the knots, and tie correctly.
2:01 - 2:25: Detailed instructions on threading the machine properly, following the chart and using the specified twine.
2:30 - 3:08: Importance of checking knots to ensure bundles stay tied, and notifying a supervisor if the machine makes poor knots.
3:19 - 4:12: Instructions for tying a normal-sized bundle: tie the long way first, then the short way, ensuring a tight, compact bundle.
4:15 - 5:13: Slow-motion demonstration of tying a bundle both the long way and the short way to ensure it stays tied during transit.
5:16 - 5:31: Instructions for tying thin bundles (about 10 letters) by holding the bundle on edge and pressing the trip lever.
5:55 - 6:29: Slow-motion demonstration of tying thin bundles by machine.
6:33 - 6:39: Alternate method for tying thin bundles with or without facing slips.
6:42 - 7:19: Emphasis on the importance of operator skill and knowledge for efficient machine use, ensuring bundles are compact and firmly tied.
7:22 - 7:31: Correct procedure saves effort and ensures bundles arrive in good condition.
Transcription
[Music] this is the two wrap twine tying machine especially designed for post office needs properly used it ties bundles of long short or mixed letters and letter size circulars compactly and securely facing slips are easy to tie into the bundle this machine will will save you much of the effort and fatigue caused by hand tying however unless you use the machine correctly your bundles will not be tied tight and the letters will become loose in the sack this will cause unnecessary rehandling at the receiving end and possible delay in mail delivery something all postal employees try to avoid this film will show you how to operate the twine tying machine correctly remember these points when you're tying bundles by Machine one thread the machine right two check the knots and three tie correctly first threading the machine right there's a definite scheme for threading follow this scheme when you replace an empty spool or if the twine breaks be sure to thread the twine according to the directions on the chart attached to the machine also always use the size of twine specified for the machine second Point check the knots the machine must make a secure knot or your bundle will not stay tied no matter how good a machine operator you are check the knots once in a while and whenever you notice that the machine is making poor knots tell your supervisor or serviceman so adjustments can be made do not make adjustments yourself when the machine isn't tying this perfect knot your service man knows what to do about improper knots like these good knots make good bundles the third and most important Point tie correctly when you're tying a normal size bundle which is about 4 in high always tie the long way first squeeze each end tightly place right Edge against standard keep squeezing ends and at the same time press the bundle down on the trip lever now your bundle is tied and knotted securely the long way next turn it the short way again place the right side against the upright standard s squeeze the sides press bundle down on trip lever now you have a tight compact bundle of letters that will stay tied in spite of the crushing and tossing it gets during Transit let's see that again in slow motion tie the Long Way first squeeze ends together and remove all Air between envelopes place right side against standard press bundle down on trip lever now the short way bundle against standard squeeze sides Bear Down on trip lever tying the short way la ensures holding the long tie in place a tight solid bundle of letters that will stay tied and root this is the way to tie bundles using facing slips when you're tying a thin bundle say one with about 10 letters the procedure is different hold the bundle on edge against the standard with the right hand and press the trip lever with the left hand this tie the short way only will hold the letters in a thin bundle securely here's that procedure in slow motion whole bundle against standard with right hand press lever with left hand tying thin bundles by machine is simple and easy this way here is an alternate way of tying thins with or without facing slips you have seen that the efficiency of the machine depends on the skill and knowhow of the man tying the bundles keep these points in mind and become qualified as a skilled machine operator thread the machine machine right check the knot and tie correctly your bundles of mail will be Compact and firmly tied you'll save effort and fatigue when you use the correct procedure and you'll have the satisfaction of knowing that the bundles of mail utai will arrive at destination in good condition
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